The flammability of a substance is 

• A. a chemical property.
• B. related to the density
• C. a physical property.-
• D. changeable.

What is a pure substance made of two or more elements that are chemically combined called?

• A. element
• B. compound     
• C. mixture
• D. solution

When materials combine to form a mixture, they

• A. keep their original properties.
• B. react to form a new substance with new properties.
• C. combine in a specific ratio.
• D. always change their physical state.

If a spoonful of salt is mixed in a glass of water, what is the water called?

• A. solute
• B. solution
• C. solvent
• D. element

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Element or compound?
H₂O

• element
• compound

Tags

NGSS.MS-PS1-1

Element or compound?
O₂

• Element
• Compound

Tags

NGSS.MS-PS1-1

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

Tags

NGSS.MS-PS1-1

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄
• HSO₄
• H₄S₃O
• H₂O

Tags

NGSS.MS-PS1-1