Quiz Material (Math Problems)

Question 1

Identify as pure substance or mixture:

• Table salt
• Helium
• Aluminum Foil
• Air

Answer 1

• Pure (Compound)
• Pure (Element)
• Pure (Element)
• Mixture (Non-consistent)

Question 2

Identify each as homo or heterogenous :

• Shampoo
• Soda
• Peach pie
• Banana split

Answer 2

• Homo
• Homo
• Hetero
• Hetero

Question 3

What kind of change is a candle burning?

Answer 3

Chemical

Question 4

What kind of change is cutting a pizza!

Answer 4

Physical

Question 5

Identify each as an exact or measured number:

• 1 yard
• Diameter if a red blood cell
• A can of soda has 355 mL of soda
• There are 6 hats in a shelf
• Gold melts at 1064 C°

Answer 5

• Exact
• Measured
• Measured
• Exact
• Measured

Question 6

How many significant figures does the phrase “5 pencils” have?

Answer 6

None—It’s an exact number

Question 7

4.732 x 6.88=

Answer 7

32.6

Question 8

2056.8/257.1

Answer 8

8.000

Question 9

(5.99 x 7.421)/(1.1 x 0.685)

Answer 9

59

Question 10

(4.9 x 10^3) + (7.21 x 10^4)=

Answer 10

7.70 x 10^4

Question 11

9.43-5.1=

Answer 11

4.3

Question 12

(0.7761 x 22.1) / (490.1 - 488) =

Answer 12

8

Question 13

(101.5 - 101.34) / (4.72 x 0.5225) =

Answer 13

0.06