Chemical Reactions

Which is the name of the kind of solid substance formed in this figure?  

• aqueous 
• precipitate
• acid
• synthesis 

Tags

NGSS.MS-PS1-2

In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?

• Reactants
• Products
• Atoms
• Catalysts

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An gel ice pack getting cold after you put it in the freezer for an hour.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following IS a physical change?

• Getting a haircut
• Rusty metal
• sour milk
• A compound

Tags

NGSS.MS-PS1-4

The smell made from spraying perfume on yourself. 

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

What indicates a chemical reaction occurred?

• Heat or Light is released
  heat or light is produced
• gas (bubbles) produced
• color change
• all of the above

Tags

NGSS.MS-PS1-2

1. How is a chemical change different from a physical change?

• there is no difference

• a physical change creates a new substance

• a chemical change creates a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The right side of the equation below is called the

• products
• reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

the starting materials in a chemical reaction

• Products
• Reactants
• Starters
• Enders

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an example of a physical change?

• wood burning
• ice melting
• food digesting
• iron rusting

Tags

NGSS.MS-PS1-4