Question 1

Which of the following best describes what chemistry studies?

Accepted Answer

The composition, structure, properties, and reactions of substances

Question 2

A scientist observes that an antacid tablet fizzes when dropped in water. According to the scientific method, what is the next logical step?

Accepted Answer

Propose a hypothesis explaining the fizzing

Question 3

Which of the following is the correct order of steps in the scientific method?

Accepted Answer

Observation → Hypothesis → Experiment → Conclusion

Question 4

What is the place value of the digit 2 in the number 15.24?

Accepted Answer

Tenths (2 is in the tenths place)

Question 5

Which of the following calculations is correct for the sum $$12 + ( -15 )$$?

Accepted Answer

$$-3$$

Question 6

If you multiply $$-4 by$$ $$-7$$, what is the result?

Accepted Answer

$$28$$

Question 7

An aspirin 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 of the following best describes a direct relationship as shown in the graph of balloon volume versus temperature?

Accepted Answer

As temperature increases, volume increases

Question 9

Write $$0.00086 in $$scientific notation.

Accepted Answer

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

Question 10

Which of the following is the correct scientific notation for $$64,000$$?

Accepted Answer

$$6.4 	imes 10$$^{4}$$

Question 11

A student enters $$2.5 	imes 10$$^{-4}$$ into a calculator. Which of the following displays might they see?

Accepted Answer

$$2.5E-4$$

Question 12

Which of the following is NOT a part of the scientific method?

Accepted Answer

Ignoring data that does not fit the hypothesis

Question 13

A number is written as $$2.4 	imes 10$$^{3}$$ in scientific notation. What is the standard number?

Accepted Answer

$$2,400$$

Question 14

Which of the following statements about positive and negative numbers is correct?

Accepted Answer

The quotient of two negative numbers is positive

Question 15

A scientist tests a hypothesis and the results do not support it. According to the scientific method, what should the scientist do next?

Accepted Answer

Modify the hypothesis and test again

Question 16

Which of the following is the coefficient in the scientific notation $$7.52 	imes 10$$^{4}$$?

Accepted Answer

$$7.52$$

Question 17

A balloon's volume increases from $$24.0 L to$$ $$30.0 L as $$the temperature rises from $$20^{\circ}C$ to 100$$^{\circ}$$C. $$What type of relationship does this demonstrate?

Accepted Answer

Direct relationship

Question 18

Which of the following is the correct way to subtract $$-5$$ from $$8$$?

Accepted Answer

$$8 - (-5) = 13$$

Question 19

A human hair is $$8 	imes 10$$^{-6}$$ meters wide. What is this value in standard notation?

Accepted Answer

$$0.000008$$ 	ext{ meters}$

Question 20

If a number is written as $$5.8 	imes 10$$^{-2}$$, which of the following is a possible calculator display?

Accepted Answer

$$5.8E-2$$

Chapter 1: Chemistry in Our Lives – Matter, Measurement, and Mathematical Operations

Study Guide - Practice Questions

Study Guide - Flashcards