Question 1

Which of the following best describes the first step of the scientific method?

Accepted Answer

Make observations about nature and ask questions.

Question 2

What is the result of $$(-2) 	imes (-3)$$?

Accepted Answer

$$+6$$

Question 3

A scientist proposes a hypothesis and tests it with several experiments. What is the next step in the scientific method?

Accepted Answer

Analyze the results and make a conclusion about the hypothesis.

Question 4

What is the result of $$12 + (-15)$$?

Accepted Answer

$$-3$$

Question 5

When dividing two negative numbers, such as $$\frac{-6}{-3}$$, what is the sign of the answer?

Accepted Answer

Positive

Question 6

Which of the following correctly expresses $$2400 in $$scientific notation?

Accepted Answer

$$2.4 	imes 10^3$

Question 7

A tablet contains $$325 mg of $$aspirin and has a total mass of $$545 mg. $$What is the percentage of aspirin in the tablet?

Accepted Answer

$$59.6\%$$

Question 8

Which metric unit is used to measure temperature?

Accepted Answer

Degree Celsius ($$^\circ C)$$

Question 9

How many significant figures are in the measurement $$0.00507$$?

Accepted Answer

3

Question 10

Which of the following statements about the Kelvin scale is correct?

Accepted Answer

It begins at the lowest possible temperature, $$0\ K.$$

Question 11

What is the result of $$12 - (-5)$$?

Accepted Answer

$$17$$

Question 12

Which of the following is true about the relationship shown in the graph 'Volume of a Balloon versus Temperature'?

Accepted Answer

As temperature increases, the volume of the balloon increases.

Question 13

What is the result of $$2 	imes (-3)$$?

Accepted Answer

$$-6$$

Question 14

Which of the following is NOT a step in the scientific method?

Accepted Answer

Ignore experimental results

Question 15

Which SI unit is used to measure mass?

Accepted Answer

Kilogram ($$kg)$$

Question 16

When adding $$-3$$ and $$-4$$, what is the result?

Accepted Answer

$$-7$$

Question 17

Which of the following numbers has 4 significant figures?

Accepted Answer

$$45.52$$

Question 18

What is the result of $$-6 \div 3$$?

Accepted Answer

$$-2$$

Question 19

Which of the following is the correct scientific notation for $$0.000086$$?

Accepted Answer

$$8.6 	imes 10$$^{-4}$$

Question 20

If you subtract $$-5$$ from $$-12$$, what is the result?

Accepted Answer

$$-17$$

Fundamental Math and Measurement Skills in GOB Chemistry

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