A group of students is tasked with developing a checklist for determining whether a material undergoes a chemical or physical change. The students make a preliminary list of properties that they can test and classify each as either a chemical or physical property.
Chemical Property Physical Property
bubbles when treated with acid color
burns when placed in a candle flame odor
density hardness
boiling point mass
dissolves in water melting point
Several other students in the class claim that the checklist is incorrect.
What change should the group make to the checklist to correct their mistake?
Boiling point and density should be moved to the physical property side of the list, and color and odor should be moved to the chemical property side of the list.
Boiling point and density should be moved to the physical property side of the list, and hardness and mass should be moved to the chemical property side of the list.
Dissolves in water and boiling point should be moved to the physical property side of the list, and odor and mass should be moved to the chemical property side of the list.
Density and boiling point should be moved to the physical property side of the list.
please help
Answer:
that's alot better explain it
what happens to suns energy while it travels to earth's atmosphere
A: Some of it is destroyed in Earth's atmosphere.
B: It is completely trapped by Earth's surface.
C: It is all reflected back into space.
D: Some of it reaches Earth's surface.
Answer:
D: Some of it reaches Earth's surface
Explanation:
Hope this helps and have a good day! Apologies if it's wrong. <3
Sort the benefits and consequences of using hybrid vehicles into the correct categories.
Answer:
I need the options to sort them.
How many steps or minutes would it take to burn off 890 calories?
What best explains the changes you observed in the moth populations?
Answer:
B
Explanation:
couldi get brainliest please
What is the speed of light in a vacuum?
300,000 km/sec
100,000 km/sec
500,000 km/sec
250,000 km/sec
Answer:
The first one is the right answer.
Answer:
300,000 km/sec
Explanation: The first one.
At the Winter Solstice the Sun's rays are directly perpendicular to what location on the Earth?
Tropic of Capricorn
Tropic of Cancer
The Equator
Antarctic Circle
What trait (dark or light moth) is an advantageous trait in the light forest?
Answer:
light
Explanation:
because it is better camouflaged
Describe the transfer of energy that occurs when you drop a book on the floor. Please include all possible forms.
Answer: Potential energy into Kinetic energy and heat energy.
Explanation: As every object (book) at height possess potential energy when the book is dropped down its energy is converted to kinetic energy and some amount of it is also dissipated as heat energy due to friction of air.
Study the image of the moving car.
While going uphill, the car’s potential energy is ________ and kinetic energy is ________.
-Increasing
-Decreasing
Answer:
increasing then decreasing
Explanation:
In a racquetball game, your opponent repeatedly hits the same type of serve off the front wall and it lands in approximately the same location each time. A good defensive strategy to return the serve would be:
(A)Begin in a different place on the court so your opponent serves there
(B) Begin moving in anticipation of where the ball will land
(C)Stay in ready position and move only when the ball lands
(D)Stay in ready position and wait to see if it bounces off a side wall
Answer:
b
Explanation:
A good defensive strategy to, return the serve would be to begin moving in anticipation of where the ball will land.
Option C is correct
What is defensive strategy?A defensive strategy is a marketing tactic used by management to protect their company against possible rivals.
Defensive strategy is also a tactic used in sports to prevent the opposition party from defeating you.
In conclusion, i'll suggest you start moving in anticipation of the ball's landing.
Read more about Motion
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Please help!!
Data just came in about the space pod's mission and the thrusters fired for exactly the same about of time and at the same force as they have in past missions. Nothing about the pod's thruster force was different. Based on this new evidence, neither of our previous claims could be true!
We are left with the same question: why didn't the pod dock like it was supposed to do?
What new theories do you have?
Answer:
: WHY DIDN'T THE POD DOCK LIKE IT WAS SUPPOSED TO DO?
ANSWER;
The force exerted by the thrusters caused the pod to change direction.
WHAT NEW THEORIES DO YOU HAVE?
ANSWER;
This pod moved differently because it was more massive.
CARRYONLEARNING:)
50 points for 5 questions p.s if u get brainliest u get 50 moe and then u have 100 SO YAAAAAAY p.s dont answer the new one i for got to add the points
1.What can federal appeals courts do?
Choose all answers that are correct.
Overturn the decisions of the district courts.
Remand cases back to lower courts.
Uphold the decisions of the lower courts.
Recommend cases be heard by the Supreme Court.
2.Why do the losing parties in civil trials and convicted criminals seek to involve the federal appeals courts in their cases?
because they feel that laws were incorrectly interpreted or applied in their cases
in order to force the winning side or the prosecution to present its evidence again
because they believe that their cases should be heard by magistrate judges
so that new appellate juries will hear the facts of their cases
3.How are federal judges selected?
Candidates are nominated and appointed by the Supreme Court unless the president uses the veto.
Candidates are nominated by Congress and voted upon by citizens over the age of 18 in federal elections.
Candidates are nominated by current federal judges and appointed by Congress if the House approves by a two-thirds majority vote.
Candidates are nominated and appointed by the president if the Senate approves by a majority vote.
4.What are two roles of magistrate judges?
Choose exactly two answers that are correct.
to hear preliminary evidence and decide if a case should be brought to trial
to appoint the U.S. attorney(s) for their districts
to issue court orders, such as search warrants
to deliver rulings on major cases involving federal law
5.What is the main duty of the United States Supreme Court?
to sentence or parole convicted criminals
to appoint judges to lower federal courts
to hear and rule on cases
to ratify or veto new laws thx UwU p.s dont answer the new one i for got to add the points
Answer:
1. c
2. b
3. d
4. a&c
5. d
hope this helps
Study the image of the moving car.
A car that is driving at the flat bottom of the hill would have ______ potential energy and _______ kinetic energy.
- High
- Low
- Equal
Answer:
Low Potential energy and High Kinetic energy
Explanation:
Hope this helps and have a good day! Apologies if it's wrong.<3
Answer:
Low, high
Explanation:
The potential energy for the car would be low as it is on the flat bottom of the hill. Since it is still driving, it does have some kinetic energy. I'm assuming that it is currently moving at a constant velocity, so the kinetic energy would remain high (remember, the kinetic energy of an object is the energy that it possesses due to its motion).
Explain each of Newton’s three laws :
a. Law of Inertia
b. Law of Force and Acceleration
c. Law of Action/Reaction
no links please !
Please answer this question fast
Answer:
a
Explanation:
they all have an equal number of pins, so the magnet won't tip back or forth (it will to the side though)
A crate is pushed up each of the two ramps shown in the diagram below. Based on the concept that simple machines make work easier, and assuming that both ramps are frictionless, which statement is true? Question 4 options: Ramp B requires less force than ramp A. Ramp A requires less force than ramp B. Ramp B raises the crate higher than ramp A. Ramp A raises the crate higher than ramp B.
Answer:
ramp B requires less than A
look at the diagram of the bicycle chain and the cogs above. Explain in detail why you exert a force on the pedals, but you still obey the law of conservation of energy.
What three sprites are needed to create the Space Invaders game that was discussed in the unit? spaceship, laser, enemy gnome, alien, star moon, sun, rocket spaceship, alien, black hole
Answer: anlien, enemy gnome, spaceship
Explanation:
Does a tree falling over in a forest make a sound if there is no receptor (human or animal ear) to hear it? In your answer, describe why you think it does or does not. Describe how you would test your hypothesis. Use relevant terms.
Yes. A tree falling over in a forest makes a sound even there is no receptor (human or animal ear) to hear it.
What is sound?In terms of physics, sound is a vibration that travels through a transmission medium like a gas, liquid, or solid as an acoustic wave. Sound is the reception of these waves and the brain's perception of them in terms of human physiology and psychology. Only acoustic waves with frequencies between roughly 20 Hz and 20 kHz, or the audio frequency range, can cause a human to have an auditory sensation.
If sound is defined as air vibrations, then the falling tree most definitely creates sound because it causes air vibrations. A recorder with a microphone could undoubtedly capture those vibrations as sound even if no one or any other animal was around to hear it.
Learn more about sound here:
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Place the locations of a watermelon in order from MOST to LEAST potential energy.
- On a roof
- Above a refrigerator
- On the ground
- Aboard a flying airplane
- On top of a table
Answer:
Aboard a flying airplane
On a roof
Above a refrigerator
On top of a table
On the ground
Explanation:
The higher an object is the more gravity wants to pull it down
Answer:
Flying airplane, on a roof, above a refridgerator, on top of a table, on the ground
Explanation:
Which observation indicates a chemical property?
slowly dissolves
turns cloudy
turns black
gritty
Answer:
Turns black.
Explanation:
Study the image of the moving car.
While traveling downhill, the car’s potential is ________ and kinetic energy is _______.
- Increasing
- Decreasing
- Staying the same
Answer:
While traveling downhill, the car’s potential is increasing and kinetic energy is decreasing
Explanation:
hope this helps!
Divers found two substances on the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different?
Answer:
Substance 2 is a still figure and substance 1 isn't
Explanation:
In this light-colored forest, you started with 50% light moths and 50% dark moths. At the end of your simulation, was there a higher percentage of light or dark moths?
Answer:
light moths.
Explanation:because the forest is a light-colored forest.
Describe a situation where you can be traveling at a low speed but have an extremely high velocity
Answer:
Cruising at 35,000 feet in an airliner, straight toward the east,
at 500 miles per hour
Explanation:
Answer:
Explanation:
Traveling in a plane.
Taylor created the following table to compare the three types of rocks. What correction needs to be made to the information in the table?
Examples of igneous rock are sandstone and limestone and examples of sedimentary rock are granite and basalt.
Examples of igneous rock are granite and marble and examples of metamorphic rock and basalt and gneiss.
Metamorphic rocks are made from the cooling and hardening of sediment and igneous rock is made from high heat and pressure causing chemical change.
Igneous rocks are the cooling and hardening of magma or lava and sedimentary rock is made of sediment cemented together.
Igneous rocks are the cooling and hardening of magma or lava and sedimentary rock is made of sediment cemented together.
Igneous rocks are formed by cooling and hardening of sediment. The examples of igneous rocks include granite and basalt. Metamorphic rocks are formed by the treatment of high heat and pressure. The examples of metamorphic rocks are marble and gneiss.
What are Igneous rocks?Igneous rock or magmatic rock, is one of the three main rock types, and the other rocks being sedimentary and metamorphic rocks. Igneous rock is formed through the cooling and solidification of the magma or lava in the volcano. The magma can be derived from partial melts of existing rocks in either a planet's mantle or the crust.
Metamorphic rock are formed from other type of rocks, however they have been substantially changed from their original igneous, sedimentary, or earlier metamorphic forms. Metamorphic rocks form when the rocks are subjected to high temperature, high pressure, hot mineral-rich fluids or, more commonly, some of the combination of these factors.
Learn more about Rocks here:
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A pumpkin with a mass of 2.5 kg was pushed toward a wall. The average acceleration of the pumpkin was 10.7 m/s2.
How much force was applied to the pumpkin to make it move?
A. 4.28 N
B. 4.28 m/s2
C. 26.75 m/s2
D. 26.75 N
Which of these actions requires KINETIC Energy? Choose all of the correct answers.
- Sleeping
- Swimming
- Turning a doorknob
- Listening to music
- Hitting a tennis ball
- Waiting at a red light
Answer:
turning a doorknob
Explanation:
it will snap back once you release it.
50 points for 5 questions p.s if u get brainliest u get 50 moe and then u have 100 SO YAAAAAAY
1.What can federal appeals courts do?
Choose all answers that are correct.
Overturn the decisions of the district courts.
Remand cases back to lower courts.
Uphold the decisions of the lower courts.
Recommend cases be heard by the Supreme Court.
2.Why do the losing parties in civil trials and convicted criminals seek to involve the federal appeals courts in their cases?
because they feel that laws were incorrectly interpreted or applied in their cases
in order to force the winning side or the prosecution to present its evidence again
because they believe that their cases should be heard by magistrate judges
so that new appellate juries will hear the facts of their cases
3.How are federal judges selected?
Candidates are nominated and appointed by the Supreme Court unless the president uses the veto.
Candidates are nominated by Congress and voted upon by citizens over the age of 18 in federal elections.
Candidates are nominated by current federal judges and appointed by Congress if the House approves by a two-thirds majority vote.
Candidates are nominated and appointed by the president if the Senate approves by a majority vote.
4.What are two roles of magistrate judges?
Choose exactly two answers that are correct.
to hear preliminary evidence and decide if a case should be brought to trial
to appoint the U.S. attorney(s) for their districts
to issue court orders, such as search warrants
to deliver rulings on major cases involving federal law
5.What is the main duty of the United States Supreme Court?
to sentence or parole convicted criminals
to appoint judges to lower federal courts
to hear and rule on cases
to ratify or veto new laws thx UwU
Answer:
The correct answers are listed below:
#1 = B, C, & D
#2 = A
#3 = C
#4 = C & A
#5 = C
Explanation: