STAAR Review 8.5E

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

Which of the following could indicate a chemical change? 

• All of the answers could indicate Chemical Change 
• a color change has occurred 
• bubbles appear 
• identifying one or more new chemical products 

 Which is NOT an example of chemical change?

• production of gas.
• change in color.
• change in size.
• transfer of energy.
  

Chemical reactions that absorb energy are known as ________________________.

• Endothermic
• Exothermic
• Boring
• Reactions

A copper penny turning greenish after a few years is an example of...

• Chemical Change
• Physical Change

Which of the following is a PHYSICAL change?

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

Which of the following IS a chemical change

• using chalk
• water freezing
• slicing cheese
• digestion

What is the law of conservation of mass?

• The part of the universe being studied
• The rest of the universe that interacts with the system
• Within a closed system, mass does not change
• A system that freely exchanges matter and energy

Can matter be created or destroyed?

• Yes, it can be created.
• Yes, it can be destroyed.
• No, matter is always conserved
• None of these

Tags

NGSS.MS-PS1-5