Answer:
6.125 × 10^-5
Explanation:
You have to move the decimal place 5 times to the right. Remember in scientific notation the first number, (the number that comes before the 10) has to be between 1.0 and 9.99...
Which of the following describes scientists?
A. People with similar personalities
B. People from different backgrounds
C. People with perfect understanding of science
D. People with only one perspective
Answer:C.people with perfect understanding of science.
Answer:
C. People with perfect understanding of science
Explanation:
Similar personalities, different backgrounds, and only one perspective are just traits of people.
Perfect understanding of science is relating to a scientist. Scientists have high knowledge of science.
Which of the following would have the best thermal conductor properties?
A. A thick mug
B. A plastic cup
Ос. A paper cup
D. A cup made of metal
Answer:
D
Explanation:
metal is a major cunductor of heat
A cup made of metal would have the best thermal conductor properties.
The answer is option D.
Is a metal cup a good conductor of heat?Metals have unfastened electrons that are not bounded to the atoms. those electrons are unfastened to move around within the metal, colliding with the metal atoms and shifting heat to them successfully. This makes metals higher conductors of warmth than maximum other materials.
Which of the following would have a high-quality thermal conductor?Diamond is the leading thermally conductive material and has conductivity values measured 5x better than copper, the maximum synthetic metallic inside the united states of America. Diamond atoms are composed of a simple carbon spine this is a really perfect molecular structure for an effective heat switch.
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Which describes a climate effect on the rate of weathering? Cold climates favor mechanical weathering. Chemical reactions occur slower at higher temperatures. Lower precipitation levels lead to more chemical reactions. The chemical reaction rates of minerals are not impacted by temperature.
Answer:
the answer is Cold climates favor mechanical weathering.
Explanation:
I got 100% on the Quiz
Statement that describes climate effect on the rate of weathering as regards this question is A:Cold climates favor mechanical weathering.
Weathering can be regarded as disaggregation of rocks into smaller bits by the actions of agents of weathering such as man, animals, water and so on.However, climate can also have effect on the rate of weathering, when there is cold climate, mechanical weathering is favoured.Option B,C,D are wrong because high temperature brings about increase in rate of chemical weathering.
Therefore, option A is correct.
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which diagram(s) represents the bonding pattern of metals? a)A and B
b)C and D
c)A
d)C
the other guy is totally wrong. the answer is a for sure. C is showing a covalent bond between 3 atoms. Metals bond differently. Like shown in a and b. However b is innacurate because it shows the electrons being the largest(since they are negatively charged and there is a - sybmol), and we all know protons are much larger than electrons. SO a is correct because it depicts the positive protons(+ symbol) as the biggest. So go with a.
What makes the atomic radius change down a column of the periodic table?
O A. The greater number of total electrons, the larger the atomic radius.
O B. The more valence electrons listed, the larger the atomic radius.
C. The more sublevels occupied, the larger the atomic radius.
O D. The larger the highest energy level number, the larger the atomic
radius.
Answer:
As you go across a period, radius shrinks because you are adding protons. The added positive charge increases pull on the electron shells. So I believe the answer is D
The statement, that describes the atomic radius change down a column of the periodic table is "the larger the highest energy level number, the larger the atomic radius."
What is atomic radius?The size of an atom is described by its atomic radius. Atomic radius is commonly defined as the total distance from an atom's nucleus to the electron's outermost orbital.
The atomic radii of elements steadily grow from top to bottom in a group. As we move down the group, the atomic number rises, and so does the number of shells. Furthermore, as we advance down the group, the valence electrons are present in a higher shell, increasing the distance of the valence electrons from the nucleus. As a result, the attraction between the nucleus and the valence electron weakens. When a result, as one moves along a group, the atomic radius grows.
As the number of energy levels (n) decreases down a group, the distance between the nucleus and the outermost orbital rises. As a result, the atomic radius increases.
Hence, the correct option is D.
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Atoms are very small. Approximately how many atoms would it take to
make a stack as thick as a potato chip?
A. Thousands
B. Hundreds
C. Billions
D. Millions
Reset Selection
Answer:
Billions
Explanation:
A full stop contains almost trillion of atoms.
Billions of atoms would it take to make a stack as thick as a potato chip. Hence, option C is correct.
What are atoms?An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Billions of atoms would it take to make a stack as thick as a potato chip. Hence, option C is correct.
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What significant contribution did Lavoisier make to chemistry?
A. He was the first to use scientific experiments to learn about
atoms.
B. He was the first to discover the atom.
C. He was the first to propose the atomic theory.
D. He was the first to split the atom.
A significant contribution that Lavoisier made to chemistry is that he was the first to propose the atomic theory that is in Option C, the atomic theory was critical for understanding and studying atoms.
What is the significance of the Lavoisier?His contribution is significant because he made significant contributions to the fields of chemistry and biology, such as the discovery of oxygen, and also gave the concept of conservation of mass of the atoms, which is why he is known as the "Father of Modern Chemistry," as well as he is well known for his experimentation and precise measurement.
Hence, a significant contribution that Lavoisier made to chemistry is that he was the first to propose the atomic theory that is in Option C, the atomic theory was critical for understanding and studying atoms.
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Which of the following is an accurate description of an ionic bond? Anions and anions attract. Cations and cations attract. Cations and anions attract. Atoms share electrons.
Answer:
Atoms of different elements, having gained or lost electrons, form negative and positive ions that are bonded together by attractive forces between ions with opposite charges.
Explanation:
The atoms have different numbers of neutrons and the same number of protons. hope this helps you :)
which of the following accurately describes the transmission of sound and waves in seawater? A sound travels faster in seawater because seawater is less compressible than the atmosphere. B sound travels slower in seawater because seawater is less dense than the atmosphere C sound travels slower in seawater because seawater is colder than the atmosphere D sound travels faster in seawater because seawater is less dense than the atmosphere.
Answer:
Salty water is more dens than freshwater. answer is D
Explanation:
The statement which accurately describes the transmission of sound and waves in seawater that sound travels faster in seawater because seawater is more dense than the atmosphere.
What is sound waves?Sound wave is an example of longitudinal wave. It always travel through any medium as it requires some objects to transfer its energy.
Travelling of sound waves is directly depends on the vibration of the particles of the medium and in seawater particles of the water in the form of salt are present in much amount which makes it dense. And due to dense medium sound waves will travel through seawater through the fast speed.
Hence, sound travels faster in seawater because seawater is more dense than the atmosphere.
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What information does a phase diagram give? A. The effect of temperature on volume changes of substances B. The effect of temperature and pressure on the phase of a substance C. The effect of concentration on the freezing point of a solution D. The effect of oxidation number on the melting point of a metal
Answer:
B.
Explanation:
To solve this we must be knowing each and every concept related to phase diagram. Therefore, the correct option is option B among all the given options.
What is phase diagram?A phase diagram is a graphic that depicts a substance's thermodynamic state at various pressures and temperatures. The areas surrounding the lines represent the phase of both the material, and the lines represent the points at which the phases are all in equilibrium.
A phase diagram often contains lines of equilibrium and phase boundaries. Multiple phases like matter can exist in equilibrium along these lines. The lines also illustrate the locations of phase transitions. Phase diagram tells about the effect of temperature and pressure on the phase of a substance.
Therefore, the correct option is option B among all the given options.
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8. What is an energy level?
A)The region outside the nucleus where the neutron is likely to be moving.
B)The region outside the nucleus where the electron is likely to be moving.
C)The region outside the nucleus where the proton is likely to be moving.
D)The region inside the nucleus where the electrons are located.
Answer:
B. The region outside a nucleus where the electron is moving
Explanation:
The more the electron moves, the higher energy level it has, the slower the electron moves the lowwer energy level it has.
Answer:
Energy levels (also called electron shells) are fixed distances from the nucleus of an atom where electrons may be found. Electrons are tiny, negatively charged particles in an atom that move around the positive nucleus at the center. Energy levels are a little like the steps of a staircase. You can stand on one step or another but not in between the steps. The same goes for electrons. They can occupy one energy level or another but not the space between energy levels.
:D