Which statement correctly describes the relationship between thermal energy and particle movement?(1 point)
Responses
As thermal energy increases, there is more particle movement.
As thermal energy increases, there is more particle movement.
As thermal energy increases, it is not possible to predict particle movement.
As thermal energy increases, it is not possible to predict particle movement.
As thermal energy increases, particle movement does not change.
As thermal energy increases, particle movement does not change.
As thermal energy increases, there is less particle movement.
As thermal energy increases, there is more particle movement.
Is that correct
Yes, that is correct. As thermal energy increases, the particles in a substance gain more kinetic energy and move more rapidly.
A scientist adds iodine as an indicator to an unknown substance. What will this indicator reveal about the substance?(1 point)
Responses
the presence of baking powder
the presence of baking powder
the presence of starch
the presence of starch
the presence of lipids or fat
the presence of lipids or fat
the presence of glucose
The presence of starch.
is that correct
Yes, that is correct. Iodine is commonly used as an indicator for the presence of starch. It turns blue-black in the presence of starch.
A student wants to try to convince her parents to stop serving peas for dinner. She lays out her argument that peas are high in fructose, which is a type of sugar. Which test could she use to provide scientific evidence to support her argument that peas are high in fructose?(1 point)
Responses
brown paper bag test
brown paper bag test
Benedict’s test
Benedict’s test
iodine test
iodine test
vinegar test
Benedict's test.
is that correct
Yes, that is correct. The Benedict's test is commonly used to detect the presence of reducing sugars, such as fructose. By performing this test on peas, the student can potentially provide scientific evidence to support her argument that peas are high in fructose.
The expression like a ton of bricks means “a crushing weight.” Would being hit by an actual ton of bricks hurt if it happened on the moon?(1 point)
Responses
Yes, it would hurt because the bricks would still have the same mass.
Yes, it would hurt because the bricks would still have the same mass.
Yes, it would hurt because the bricks would still have more weight.
Yes, it would hurt because the bricks would still have more weight.
No, it would not hurt because the bricks would have more weight.
No, it would not hurt because the bricks would have more weight.
No, it would not hurt because the bricks would have little mass.
No, it would not hurt because the bricks would have little mass.
Which measurement is affected by gravity?(1 point)
Responses
weight
weight
mass
mass
density
density
inertia
Weight.
is that correct?
Yes, that is correct. Weight is the measurement that is affected by gravity. It is the force exerted on an object due to gravity and is dependent on the mass of the object and the acceleration due to gravity.
Properties of Matter Unit Test
6 of 126 of 12 Items
Question
What happens to the density of a material if you have a larger piece of it?(1 point)
Responses
The density will remain the same because mass and volume will both increase in the same way.
The density will remain the same because mass and volume will both increase in the same way.
The density will be smaller because the mass remains the same as the volume increases.
The density will be smaller because the mass remains the same as the volume increases.
The density will be greater because the mass increases but the volume remains the same.
The density will be greater because the mass increases but the volume remains the same.
The density will remain the same because mass and volume will remain the same.
The density will remain the same because mass and volume will both increase in the same way.
Bot is that correct?
No, that is not correct. The density of a material decreases when the volume increases while the mass remains the same. The correct response is: The density will be smaller because the mass remains the same as the volume increases.
Which phases does water go through if you use distillation to separate it from dissolved sugar?(1 point)
Responses
from a liquid to a solid, and back to a liquid
from a liquid to a solid, and back to a liquid
from a liquid to a gas, and back to a liquid
from a liquid to a gas, and back to a liquid
from a solid to a liquid, and then to a gas
from a solid to a liquid, and then to a gas
from a liquid to a solid, and then to a gas
from a liquid to a gas, and back to a liquid
Bot is that correct?
No, that is not correct. During distillation, water goes through a phase change from a liquid to a gas (vapor) and then condenses back into a liquid. The correct response is: from a liquid to a gas, and back to a liquid.
Which statement is a good description of plastic?(1 point)
Responses
It is a natural material made from natural resources.
It is a natural material made from natural resources.
It is a synthetic material that does not come from natural resources.
It is a synthetic material that does not come from natural resources.
It is a natural material that is made from synthetic resources.
It is a natural material that is made from synthetic resources.
It is a synthetic material that comes from natural resources.
It is a synthetic material that comes from natural resources.
A student states that natural resources could be saved if people made everything they need in labs. What is the main problem with this idea?(1 point)
Responses
People might think it is fine to waste a lot of the materials since they just came from a lab.
People might think it is fine to waste a lot of the materials since they just came from a lab.
Anything made in the lab requires natural resources to produce it.
Anything made in the lab requires natural resources to produce it.
There are not enough synthetic resources yet to make what people need.
There are not enough synthetic resources yet to make what people need.
The materials made in labs will still pollute the environment and destroy natural resources.
The main problem with this idea is that anything made in the lab requires natural resources to produce it.
What is the Great Pacific Garbage Patch?(1 point)
Responses
a place on the Pacific Coast where plastic waste from the ocean has collected on beaches
a place on the Pacific Coast where plastic waste from the ocean has collected on beaches
a place where plastic and other waste has collected in the Pacific Ocean
a place where plastic and other waste has collected in the Pacific Ocean
a place where people who live near the Pacific Ocean have collected plastic in one place
a place where people who live near the Pacific Ocean have collected plastic in one place
a place on the Pacific Coast with a large plastic recycling facility
The Great Pacific Garbage Patch is a place where plastic and other waste has collected in the Pacific Ocean.
In one to two sentences, explain a similarity and a difference between the particles in liquid water at 100ºC and the particles in steam at 100ºC.
Both liquid water at 100ºC and steam at 100ºC are composed of water molecules. However, the particles in liquid water are closer together and have weaker kinetic energy compared to the particles in steam, which are further apart and have higher kinetic energy.
You overhear a friend saying, “Plastic is the worst thing that humans have ever invented.”
In four to five sentences, explain whether you agree or disagree with your friend’s statement. Be sure to include facts that show the range of impacts that plastic has on human society and the environment.