Chemical Reactions Test Practice

Matter can be classified by characteristics. In science, what do we call these characteristics?

• acidic and basic properties

• physical and chemical properties

• dependent and independent properties

• positive and negative properties

Which characteristics are chemical characteristics?

• flammability

• melting point

• reactivity

• boiling point

• ability to rust

Which characteristics are physical characteristics?

• melting point

• solubility

• combustibility

• boiling point

Matter can go through changes. What are these changes called?

• positive and negative changes

• dependent and independent changes

• acidic and basic changes

• physical and chemical changes

What happens to the atoms of matter after a chemical change?

• The atoms are destroyed.

• New atoms are created

• Bonds are broken and new bonds are formed.

Tags

NGSS.MS-PS1-5

Which changes are physical changes?

• Cutting paper

• Toasting Bread

• Crushing a Can

• Painting a Fence

• Dissolving Sugar

Which changes are chemical changes?

• Cutting paper

• Toasting Bread

• A Rotting Banana

• Fireworks Display

• Rusting

Two 6th Grade students mixed two substances together in a container covered with a balloon. After the mixing the balloon inflated. What sign is present that chemical reaction has happened?

• A precipitate formed.

• The color changed.

• The temperature changed.

• A gas was produced.

A student accidently spilled vinegar into a glass of milk. Soon a strange solid appeared. What sign is present that a chemical reaction has happened?

• A precipitate formed.

• The color changed.

• The temperature changed.

• A gas was produced.

Tags

NGSS.MS-PS1-2

Over time a banana on the counter turned brown. What sign is present that a chemical reaction happened?

• A precipitate formed.

• The color changed.

• The temperature changed.

• A gas was produced.

Tags

NGSS.MS-PS1-2