Gable's TEST #3 Evidence of Chemical Reactions

What is the Law of Conservation of Mass?

• mass of reactants > mass of products

• mass of reactants < mass of products

• mass of reactants = mass of products

_______________ is an example of both a color change and new substance produced from a chemical change with oxygen and metal.

• shredded paper
• rust (iron oxide)
• wood chips
• melted wax

Tags

NGSS.MS-PS1-2

In a ___________change, a substance changes into a different substance.

• Physical

• Chemical

Which of these is NOT a sign that a chemical change has occurred? 

• Change in shape.
• An unexpected color change
• A temperature change
• The formation of a precipitate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which is the name of the kind of solid substance formed when 2 liquids are combined shown in this figure?

• aqueous

• precipitate

• acid

• synthesis

Provides evidence that a chemical reaction has occurred. 

• dissolving 
• melting
• formation of a gas
• bending

Tags

NGSS.MS-PS1-2

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A change in the size, shape, or state of matter.

• chemical change
• physical change
• chemical reaction
• electron change

Tags

NGSS.MS-PS1-4

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• sour milk

Tags

NGSS.MS-PS1-2

Baking a cake is an example of

• Physical Change (Just changed phases)

• Chemical Change (can't change it back)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5