Chemistry Unit 0-1 Practice Problems

Which type of data involves numbers that are obtained by counting or measuring?

• quantitative
• qualitative

"The coin weighs 2 grams"
This observation is...

• Subjective
• Objective

When smelling a liquid, you should

• Inhale deeply
• Use a fan
• Waft the odor toward you
• Pour it on the table and test it

Your friend's hair got caught in the triple balance. She should have ________?

• Cut her hair before the class
• Tied back her hair with a tie
• Skipped class and gotten the notes later
• Worn a hat

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

• quantitative

• qualitative

There are two types of data. Which type of data involves descriptions that cannot be counted or measured?

• qualitative

• quantitative

How would you write 564,000,000 in scientific notation?

• 5.64 x 10^-7
• 5.64 x 10⁶
• 5.64 x 10⁸
• 56.4 x 10⁷

Express the following in scientific notation:
.000457

• 457 x 10⁶
• 457 x 10^-6
• 4.57 x10⁴
• 4.57 x 10^-4

Which of the following is correct scientific notation?

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

The closest galaxy to our own is over 2,500,000 light years away.  Write this number is scientific notation.

• 2.5 x 10⁷
• .25 x 10⁷
• 25 x 10⁵
• 2.5 x 10⁶