Q1 Class Review 24-25

Anything that takes up space and has mass is...

• Matter
• Work
• Power
• Newton's 1st Law

The classification of matter as a solid, liquid, or a gas.

• Matter
• Mass
• Physical State
• Thermal Energy

Students place ice cubes outside on the ground, on a hot summer day. Which best describes how the ice cubes change over time?

• Gas to solid to liquid
• Liquid to gas to solid
• Solid to liquid to gas
• Solid to gas to liquid

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

• Filter
• Screen
• Magnet
• Evaporation

At room temperature helium does not have a definite shape or volume. Which state is it in? 

• gas
• solid
• water
• liquid

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

The metal copper is there to:

• Provide a conductor for energy to flow from one place to another.
• Provide an insulator for energy to flow from one place to another.
• Provide an insulator to slow the flow of energy.
• Provide a conductor so slow the flow of energy.

which of the following is not evidence that a chemical reaction has taken place?

• Gas produced

• Unexpected color change

• Change in energy (light or temperature)

• Change of size or shape

A student mixes two chemicals and sees the production of bubbles, the formation of a precipitate, a change in shape, and heat being produced.

How many of these observations indicate a chemical change?

• 2

• 3

• 4

Which of the following is the best description of an element?

• A substance that cannot be broken into simpler substances.

• A naturally occurring mineral made of more than one substance.

• A small particle made with a specific chemical composition.

• A collection of atoms that have different abilities joined together.