Study of Matter Quiz #1

Which of the following options provides evidence of a CHEMICAL change?

• Wood is burned releasing ash and smoke
• Rocks separate when soil is sifted
• Water turns to ice when you put it in the freezer
• Salt dissolves in water

Which of the following examples provides evidence of a PHYSICAL change?

• Wood is burned and releases ash and smoke
• Iron rusts over time
• When mixed, baking soda and vinegar form gas bubbles
• A piece of paper changes shape when you rip it up

A white tablet is dropped into water. The water becomes cloudy and bubbles are produced. What type of change has occurred?

• Physical change
• Chemical change
• No change

When mixing blood and snake venom, a chunky, solid substance forms. What has occurred?

• Physical change: state of matter
• Chemical change: production of a solid
• Physical change: freezing
• Chemical change: rust

A physical change...

• Changes the physical properties of an object, but does not create a new substance.
• Creates a new substance and cannot be undone.

A chemical change...

• Changes the physical properties of an object, but does not create a new substance.
• Creates a new substance and cannot be undone.

Is this an example of a physical or chemical change?

• Physical
• Chemical

Is this an example of a physical or chemical change?

• Physical
• Chemical

Is this an example of a physical or chemical change?

• Physical
• Chemical

Is this an example of a physical or chemical change?

• Physical
• Chemical