Elements & Compounds

Which of the following is a compound?

• Si

• CO₂

• Cl

• He

• Ti

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O

• HCl

• NaCl

• Au

• CaCO₃

Which of the following could be a symbol on the periodic table of elements?

• CC

• Cc

• cc

• CcC

• CK1

Tags

NGSS.MS-PS1-1

Salt water boils and the water (H₂O) completely evaporates, salt (NaCl) is left at the bottom of the beaker. Which of the following is NOT left in the beaker?

• Compound

• Mixture

• Salt

• NaCl

• The other component of sea water that is not H₂O.

Lil' Mo' travelled 160 miles in two hours in her vehicle. What was her average speed?

• 40 mph

• 60 mph

• 70 mph

• 90 mph

• 80 mph

What is NOT made up of two or more elements that are chemically combined?

• Element

• Compound

• Mixture

• Solid

• Liquid

Which of the following is an element?

• Gold

• Air

• Water

• Carbon Dioxide

• Nitrous Oxide

How many elements are there in CuSO₄?

• 1

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

Big Mo' drove her car for 3 hours at an average speed of 70 mph. How many miles did she travel? (Don't Forget Your Units)

(a)  

Big Mo' covered a distance of 320 mi. Her average speed was 80 mph. How much time did it take her to travel this distance at that speed? (Don't Forget Your Units)

(a)