States Of Matter Quiz For 8th Grade

1. Oobleck took on the properties of a solid when ________________ was applied.

When we squeezed or slapped the oobleck, we applied a force. This caused the long starch molecules to get tangled up together and create a temporary solid-like substance.

Explanation

When we squeezed or slapped the oobleck, we applied a force. This caused the long starch molecules to get tangled up together and create a temporary solid-like substance.

Submit

2. Which answer describes the differences between a solid and a liquid?

In a solid, the particles have less energy than in a liquid.

In a solid, the particles have more energy than in a liquid.

The particles in a liquid are locked in place and the particles in a solid can flow around each other.

The particles in a solid move less than the particles in a liquid.

Both A and D are correct.

A solid has less energy than a liquid. The particles do not have enough energy to break free from the other particles, so a solid holds its shape. In a liquid, the particles are higher energy and they move and flow over each other.

Explanation

A solid has less energy than a liquid. The particles do not have enough energy to break free from the other particles, so a solid holds its shape. In a liquid, the particles are higher energy and they move and flow over each other.

3. What would happen to the volume of a balloon if you moved it from a warm room to a cold freezer?

Volume would decrease.

Volume would increase.

Volume wouldn't change.

Not enough information is given.

As the air in the balloon cools, the molecules slow down. As molecules slow down, they exert less pressure on the sides of the balloon and the balloon would shrink a little bit.

Explanation

As the air in the balloon cools, the molecules slow down. As molecules slow down, they exert less pressure on the sides of the balloon and the balloon would shrink a little bit.

4. When you increase the temperature of a gas in a sealed container (constant volume), the pressure increases. This is because _______________

Of the principles described by Charles's Law

Of the principles described by Boyle's Law

High-temperature gas particles move faster, so they exert more pressure.

High-Temperature gas particles move slower, so they exert less pressure.

The faster particles move, the harder they hit the sides of the container they are in. This causes increased pressure.

Explanation

The faster particles move, the harder they hit the sides of the container they are in. This causes increased pressure.

5. Boyle's Law has to do with the relationship between _________ and ______________ in a gas.

Temperature, Pressure

Pressure, Volume

Temperature, Volume

Boyle's Law states that at a constant temperature, when the volume of a gas decreases, pressure increases. You are smushing more particles into a smaller space, so they hit the sides of the container more often, causing more pressure.

Explanation

Boyle's Law states that at a constant temperature, when the volume of a gas decreases, pressure increases. You are smushing more particles into a smaller space, so they hit the sides of the container more often, causing more pressure.

6. The ____________ of a fluid describes its resistance to flowing.

Water has low viscosity. Syrup has high viscosity. Oobleck had high viscosity because the starch molecules in it get tangled up as it moves.

Explanation

Water has low viscosity. Syrup has high viscosity. Oobleck had high viscosity because the starch molecules in it get tangled up as it moves.

Submit

7. Charles's Law states that:

As the volume of a gas increases, temperature increases.

As the pressure on a gas increases, volume decreases.

As the temperature of a gas increases, volume increases.

As the temperature of a gas increases, volume decreases.

None of the above.

Charles's Law describes the relationship between temperature and volume. As you heat up particles in a gas, they move faster. As the particles move faster, they push out harder on the container they are in. If the container is flexible, like a balloon, it expands (its volume increases.)

Explanation

Charles's Law describes the relationship between temperature and volume. As you heat up particles in a gas, they move faster. As the particles move faster, they push out harder on the container they are in. If the container is flexible, like a balloon, it expands (its volume increases.)

8. Why did the marshmallow in the syringe expand when the plunger was pulled out?

Pulling the plunger created a force on the marshmallow and spread it out.

Pulling the plunger changed the pressure inside the syringe by changing the volume of the syringe tube.

Pulling the plunger changed the volume of the tube, and it created a vacuum.

Pulling the plunger increased the pressure on the marshmallow and increased its volume.

None of these are true.

As the plunger moved outwards, the volume of the syringe increased. The air inside spread out to fill the space. As it spread out, there were fewer particles hitting the marshmallow at any given time and the air pockets inside the marshmallow could expand.

Explanation

As the plunger moved outwards, the volume of the syringe increased. The air inside spread out to fill the space. As it spread out, there were fewer particles hitting the marshmallow at any given time and the air pockets inside the marshmallow could expand.

9. What type of substance was the Oobleck we created? (check all correct answers)

Regular fluid

Regular solid

Colloid

Non-newtonian solid

Non-newtonian fluid

A colloid is a solution with large molecules dissolved in a liquied. Starch is a large molecule. A non-Newtonian fluid is a fluid that shows different properties under different conditions. Oobleck is non-Newtonian because it behaves like a solid when pressure is applied.

Explanation

A colloid is a solution with large molecules dissolved in a liquied. Starch is a large molecule. A non-Newtonian fluid is a fluid that shows different properties under different conditions. Oobleck is non-Newtonian because it behaves like a solid when pressure is applied.

Submit

10. Check all the boxes that have true statements.