Chemical Reactions Post 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

Tags

NGSS.MS-PS1-1

Which characteristics are chemical characteristics?

• flammability
• reactivity
• combustibility
• ability to rust
• melting point

Tags

NGSS.MS-PS1-2

Which characteristics are physical characteristics?

• melting point
• solubility
• odor
• boiling point
• flammability

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

• positive and negative changes
• acidic and basic changes
• physical and chemical changes

Tags

NGSS.MS-PS1-4

What is the difference between a physical and chemical change?

• Physical changes create new substances. Chemical changes only change the form of matter.

• Chemical changes create new substances. Physical changes only change the form of matter.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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

• The bonds between the atoms break and new bonds are formed.

• The atoms are destroyed and new atoms spontaneous appear.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which changes are physical changes?

• Cutting paper
• Crushing a Can
• Painting a Fence
• Dissolving Sugar
• Making a paper airplane

Which changes are chemical changes?

• Toasting Bread
• A Rotting Banana
• Burning Wood
• Fireworks Display
• Rusting

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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.
• A gas was produced.

Tags

NGSS.MS-PS1-2

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.

Tags

NGSS.MS-PS1-2