9 weeks review

Which of the following is a compound?

• Si

• CO₂

• Cl

• He

• Ti

Which of the following represents an element?

• H₂O

• HCl

• NaCl

• Au

• CaCO₃

How many elements are there in CuSO₄?

• 1

• 2

• 3

• 4

• 5

Which of the diagrams below represent a mixture?

• A

• B

• C

• D

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

• pure substance

• mixture

• solution

• compound

__ is a pure substance containing two or more kinds of atoms.

• Element

• compound

• mixture

• solution

Glass breaking is an example of :

• chemical change

• Physical Change

• No Change

Which of the following is an example

of a chemical change?

• frying eggs

• melting ice cream

• making a paper airplane

• wetting a towelphy

 

Which is an example of a physical

change?

• a candle burning

• baking a cake

• evaporating water

• metal rusting

What properites do nonmetals have in common?

• Poor conductor of electricity

• Good conductor of thermal energy

• Soft and Malleable

• Shiny, lustrous surface