7th Grade Science-Properties and Changes of Matter

Ability to rust is this type of property:

• Physical property
• Chemical property

Which is an example of a physical property?

• ability to react with acid
•  color
• flammability
• ability to react with oxygen

Which of the following is a chemical property?

• odor

• reacts with bleach

• sinks in water

• density

Physical properties are

• properties that can be observed without changing the identity of the substance
• properties that describe how a substance changes into a completely different substance
• properties that we can only observe with our eyes
• properties that we need special tools to observe

Alka-Seltzer gives off the gas carbon dioxide when added to water

• physical change

• chemical change

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Salt dissolving in water is an example of what?

• A physical change
• A chemical change
• A physical property
• A chemical property

Which is an example of a physical property?

• rusting
• boiling point
• combustion
• reactivity with water

What is the measure of the amount of matter in a solid, liquid, or gas?

• Mass
• Volume
• Density
• Liter