Chemistry Practice Test- Measurements and Conversions

How many sig. fig. are in the number below:
350.540

• 4
• 5
• 6
• 7

How many sig figs are there in the following number?

0.00400

• 1

• 3

• 5

• 6

Which value has only 4 significant digits?

• 6.930

• 0.0450

• 8450

• 0.392

Convert the following to scientific notation.

0.000480

• 4.8 x 10^-4

• 4.80 x 10^-4

• 48 x 10^-5

• 4.80 x 10⁴

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

How would you write 4.3756 x 10⁴ in standard form?

• 437,560,000
• 0.00043756
• 43,756
• 4,3756

Which of the following is correct scientific notation?

• 20.35 x 10⁴
• .2035 x 10⁴
• 2035 ⁴
• 2.035 x10⁴

Solve & Round to Correct Sig Figs.
103.45 + 2 = 

• 105
• 104
• 105.45
• 106

Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.

• 1.0 m²
• 1.1 m²
• 1.0947 m²
• 1.09 m²

2804 mg = ___________ g

• 0.2804
• 2.804
• 28.04
• 280.4