Suppose you have a sample of two pure substances: a solid piece of ice and a solid piece of copper metal. WHich would be easier to break apart?
Answer:
Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. ... A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
Explanation:
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The solid piece of ice would break more easily than that of the solid piece of copper metal because ice can be broken more easily than copper metal. The affinity is stronger in metals than water.
What are pure substances?Pure substances can be defined as the substances which are made up of only one type of atom or only one type of molecule such as water. All the constituent particles of a substance are the same in their chemical nature and physical properties. For example, the elements and compounds.
Matter is a substance which can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds which are similar. A chemical substance is composed of only one type of atom or molecule. However, a mixture is composed of different types of atoms or molecules which are not chemically bonded to each other. The chemical bonds are stronger in copper metal than that of ice. That's why, it is easier to break apart ice than copper metal.
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What occurs when the air temperature is equal to the dew point temperature? A:The relative humidity is 100%, so evaporation occurs. B:The relative humidity is 100%, so condensation occurs. C:The relative humidity is 0%, so condensation occurs. D:The relative humidity is 0%, so evaporation occurs. Is it B?
Answer:
B
Explanation:
When the air temperature is equal to the dew point temperature, the relative humidity would be 100% and condensation occurs.
The dew point temperature is a temperature at which the air is saturated with water vapor and some of it begins to condense as liquid water. As the air temperature cools further, more and more water condenses as liquid water and this is essentially what constitutes precipitation.
The correct option is B.
three structures in a nerve cell that are found in all animal cells
Answer:
The Neuron Structure
Explanation:
DONT ANSWER IF YOU DONT KNOW THE ASNSWER The reflection of parallel light rays in many different directions
is it convex or concave
A convex mirror will reflect a set of parallel rays in all directions; conversely, it will also take light from all directions and reflect it in one direction, which is exactly how it's used in stores and cars.
Which organisms are carrying out both photosynthesis and cellular respiration?
Answer:
Plants!
Explanation:
Which part of an organism is preserved in cast and mold fossils?
skin
bone
muscle
soft tissue
Explanation:
I think it would be Bones because the other options don't preserve normally. They need extremely specific conditions
Answer:
the answer is bones because I looked it up
how do we get our energy? How is that energy converted from potential to kinetic energy?
Answer:
When an object is allowed to fall, the concentrated gravitational potential energy is converted into the kinetic energy of motion.
Explanation:
Answer:
hope this helps :D
Explanation:
Kinetic energy is energy an object has because of its motion. A ball held in the air, for example, has gravitational potential energy. If released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy.
which source has the widest range of residence time
Answer:
Underground water source
Explanation:
Underground water source has the widest range of residence time. Underground water are usually present deep under the ground and are formed from the rainfall seeping into the soil and remaining there. Evaporation takes a bit of the water and the remaining are usually present for a very long time.
Underground water residence time usually ranges between few weeks to a thousand years which depicts a very wide range.
What type of organisms first move into an area fer a grimary disturbance?
A. Organisms that reproduce slowly
B. Small organisms
C. Animals with long lives.
D. Large predators
Answer:
B
Explanation:
Which of the following is the correct definition of biomass
Answer:
The total amount of organic matter from plants and animals in a habitat.
Explanation:
Biomass can be defined in ecological terms and in industrial (environmental science) terms. Ecologically, it is defined by the total mass of organisms (not organic matter) given a specific area or ecosystem. This definition is not in the choices therefore the industrial term for environmental science should be appropriate. In environmental science, biomass is the organic matter from living organisms whether wastes or dead animals or plants that can be used as fuel in powering power plants to produce electricity (mainly). Therefore from that definition, the correct answer is: All materials that form from the remains of living organisms.
Answer:
*~(￣▽￣)~*
Explanation:
"the definition of biomass is renewable energy source from Living or recently living plant and animal materials which can be used as file. for example of biomass :- plant material that produces electricity with steam.an example of biomass is animal fossil fuel".
HELPPPPP ASAPPPPP PLSSSSS
Answer:
B. can survive existing environmental conditions
Explanation:
hope this helps :)
How do cyanobacteria photosynthesize?
Answer:
hope it helps...
Explanation:
In general, photosynthesis in cyanobacteria uses water as an electron donor and produces oxygen as a byproduct, though some may also use hydrogen sulfide a process which occurs among other photosynthetic bacteria such as the purple sulfur bacteria. Carbon dioxide is reduced to form carbohydrates via the Calvin cycle.
what is a chemical property of a substance
a; color
b; reactivity
c; melting point
d; density
Answer:
A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction. Some major chemical properties include flammability, toxicity, heat of combustion, pH value, rate of radioactive decay, and chemical stability.
AND
Chemical properties can only be established by changing a substance's chemical identity, and are different from physical properties, which can be observed by viewing or touching a sample. The internal qualities of a substance must be altered to determine its chemical properties.
What are the 3 parts of nucleotides
Answer:
DNA and sugar and phosphate
Which system of the human body controls body loss and regulates body temperature?
Answer:
Our internal body temperature is regulated by a part of our brain called the hypothalamus. The hypothalamus checks our current temperature and compares it with the normal temperature of about 37°C. If our temperature is too low, the hypothalamus makes sure that the body generates and maintains heat.
Explanation:
Answer:
hypothalamus
Explanation:
It is the main organ which guides other organs to maintain body temperature
Hydrochloric acid (HCI) is a strong acid.what ions are formed when HCI dissolves in water?
Answer:
H and Cl ions are formed
When HCl is dissolved in water, ions of H and Cl are formed. Hydrogen loses an electron (becoming an ion of +1 charge) and chlorine gains an electron (becoming an ion of -1 charge).
Carbon is released to the atmosphere ty
Penang tot aan word
restation on photo
Delton hotte
Answer:
wag umasa sa brainly
Explanation:
because ang utot mo ay mabaho
Please help!!! Below is a scenario about an experiment; there are three questions referring back to this scenario, so read it carefully. Sherri wanted to test what fertilizer worked best on her tomato plants. She bought 4 different brands of fertilizer, and five tomato plants. She labeled each plant A-E. She did not give plant E any fertilizer. Each plant was kept in the same location, with the same amount of sunlight, and given the same amount of water each day. Each day at noon she measured her plants. 1. What is the independent variable in this scenario? - The type of plant - The growth of the plants - The amount of water given - The fertilizer given 2. What is the dependent variable? - The type of fertilizer - The amount of water given to each plan - The type of plant - Daily plant growth 3. Select all of the controlled variables present. - The type of plant - The type of fertilizer - How much sunlight the plants receive - How much water they receive daily
Answer:
Independent variable: The fertilizer given
Dependent variable: Daily plant growth
Constants: How much water they receive daily, How much sunlight the plants receive, type of plant (tomato plant)
Explanation:
Independent variable of an experiment is the variable that is changed or manipulated by the experimenter in order to bring about a measurable response. In this experiment where Sherri wanted to test what fertilizer worked best on her tomato plants. She used 4 different brands of fertilizer. Hence, the FERTILIZER is the independent variable
On the other hand, the dependent variable is the variable that is measured in the experiment. It is the variable that responds to the independent variable. In this experiment, the DAILY PLANT GROWTH is the dependent variable.
Constants are variables that are kept unchanged or constant throughout the experiment. In this case, the constants or controlled variables are: : How much water they receive daily, How much sunlight the plants receive, type of plant (tomato plant)
how will you justify that plate tectonics or movement of plate boundaries is also beneficial to us
Answer:
Plate boundaries are important because earthquakes and volcanoes are frequently associated with them. Massive quantities of energy can be emitted in the form of earthquakes as the Earth's tectonic plates grind past each other.
Hope this help!
Explanation:
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Answer:
The five spheres of Earth are the geosphere, hydrosphere, atmosphere, cryosphere, biospheres.
The ocean is one environment that is comprised of both the hydrosphere and biosphere. The ocean, being nothing but water, serves as the whole known world to all marine life within, which serves as the biosphere component.
Mountainous environments are also made up of multiple spheres; including, but not limited to, cryosphere, geosphere, with a little bit of biosphere as well. Mountains--which are giant rock formations created by years of seismic activity--are mostly covered in snow near the peaks due to low temperature, which will melt at different points during the year. A small assortment of wildlife call these areas home, such as jackrabbits, white-tailed deer, mountain goat, bear, gray wolf, coyote, lynx, and wolverine.
If the haploid number of chromosomes in a cell is 12, how many chromosomes will be found in G₁?
A.
12
B.
24
C.
6
Answer:
C. 24
Explanation:
The correct option is (B). 24.
What are chromosomes?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
Moreover, chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
Therefore, chromosomes are threadlike structures made of protein and a single molecule of DNA that serve to carry the genomic information from cell to cell. In plants and animals (including humans), chromosomes reside in the nucleus of cell.
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How would an ecosystem be removed if fungi were removed from the environment? A. There would be an increase in plant life. B. Nutrients would not be recycled back into the environment. C. Animal life would increase. D. All factors would stay the same.
Answer:
I also think it's A
Explanation:
Cause' I had the exact same question and A was the correct answer.
Answer:
A. There would be an increase in plant life.
Explanation:
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What would happen to the atmosphere if photosynthesis/cellular respiration wasn’t occurring?
Answer:
very little oxygen
Explanation:
the atmosphere would have very little oxygen as photosynthesis produces and releases a ton of oxygen into the atmosphere. in addition plants and animals would cease to exist as they both heavily rely on photosynthesis and cellular respiration.
How have humans impacted biodiversity
Answer:
The main threats facing biodiversity globally are: destruction, degradation and fragmentation of habitats. reduction of individual survival and reproductive rates through exploitation, pollution and introduction of alien species.
Explanation:
Which of the following is NOT a function of the integumentary system?
A. protection from foreign invaders
B. thermoregulation through sweat
C. provides the sense of touch
D. allows oxygen to flow through the bloodstream
I will pick the brainiest answer! (Answer must have support to back it up!) Thanks!
Answer:
B
Explanation:
AM I CORRECT? The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage.
Which clouds are common in winter at high altitudes and usually indicate cold but fair weather
Answer: Cirrocumulus clouds
Explanation: Cirrocumulus clouds are usually seen in the winter and indicate fair, but cold weather. In tropical regions, they may indicate an approaching hurricane. Altostratus clouds are gray or blue-gray mid level clouds composed of ice crystals and water droplets.
Salivary amylase is an enzyme that breaks down starch. The optimum or best pH for this reaction is 6.7. Which of the following would not have an effect on a reaction involving this enzyme?
. Amount of substrate
. Enzyme concentration
. Maintaining the pH of the reaction at 6.7.
. Decreased temperature of reaction temperature by 10 degrees C.
Answer:
:-) maintaining the pH of the reaction at 6.7
Explanation:
hope this helps
A splitting enzyme generated by the salivary glands is called salivary amylase. It assimilates the starch element of the food into small molecules of maltose.
The correct answer is:
Option C. Maintaining the pH of the reaction at 6.7
The explanation for the answer is:
The degree of enzyme activity and its purpose depends on the concentration of the substrate present.Enzyme concentration influences the reaction as increased enzyme amount will result in the reaction to speed up.The enzyme action depends on the temperature as the drop in the temperature will reduce the rate of reaction.Therefore, maintaining the pH of the reaction at 6.7 will not affect the reaction.
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Why is ∆Hf0 62.4 kJ/mol for I2(g), but 0.0 kJ/mol for I2(s)?
Answer:
12(s) is in its standard state.
Explanation:
Madison is conducting a biotechnology experiment in her kitchen. Her goal is to make yogurt with a pH of 4.5 in the optimal time of 4 hours. Normally, she uses a mixed culture of L. bulgaricus and S. thermophiles to ferment yogurt. She designs her experiment to include the mixed cultures but also with the L. bulgaricus culture alone to see if one would ferment faster. She graphs her results to display her data.The graph depicts the results of an experiment to make yogurt. Over six hours, milk maintains 6.5 pH. When L. bulgaricus is added to milk, the pH declines from 6.5 to about 4.3 in six hours. When L. bulgaricus and S. thermophilis are added, the pH declines over six hours to approximately 3.5.Study the graph of her results.Certain bacteria that produce lactic acid as a waste product during fermentation, an Choose... process, are important to the food industry. This lactic acid is what gives yogurt its Choose... taste. From the graph, based on the pH after 4 hours, the Choose... would taste the most acidic.
Answer:
Firstly, Milk alone did not ferment or change in pH at all, showing that it is a control variable on this experiment. The L. bulgaricus culture alone did not meet Madison's goal to make yogurt with a pH of 4.5 within 4 hours; however, the mixed culture S. thermophilis and L. bulgaricus met Madison's goal of reaching a 4.5 pH. In conclusion, the mixed culture is the fastest fermenting culture that madison has, and it meets her goal of reaching a pH of 4.5 in the optimal time of 4 hours.
Plss help!!!ASAP!!
The Process of TRANSPIRATION helps
homeostasis in the plant by maintaining_______
levels.
Loss of water =________
(lack of____________)
whats the answer choices
Answer:
Explanation: Most of the time, the stomata are open during the daytime, when photosynthesis is active and closes at night, preventing any water loss. Another way, they maintain homeostasis is by keeping the water content of the leaf constant (controlling transpiration).