Q: 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?

$$\frac{325}{545} \times 100\% = 59.6\%$$

Question 1

Which of the following best describes the field of chemistry?

Accepted Answer

The study of substances in terms of their composition, structure, properties, and reactions.

Question 2

A student observes that an antacid tablet fizzes when placed in water. Which aspect of chemistry does this observation best illustrate?

Accepted Answer

Reactions

Question 3

Which of the following is NOT considered a branch of chemistry?

Accepted Answer

Astrology

Question 4

Which statement about chemicals is correct?

Accepted Answer

Chemicals are substances that always have the same composition and properties.

Question 5

Which of the following is an example of chemistry in everyday life?

Accepted Answer

All of the above.

Question 6

A scientist proposes that a certain chemical in water causes goiter. What step of the scientific method does this represent?

Accepted Answer

Hypothesis

Question 7

Which of the following best describes a theory in the scientific method?

Accepted Answer

A model that describes how observations occur using experimental results.

Question 8

Paracelsus believed that the difference between a poison and a cure is:

Accepted Answer

The right dose.

Question 9

Which of the following activities is NOT part of a successful study plan for learning chemistry?

Accepted Answer

Staying out late the night before an exam.

Question 10

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

Accepted Answer

Tenths

Question 11

Calculate the result of $$12 + (−15).$$

Accepted Answer

$$−3$$

Question 12

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

$$\frac{325}{545} 	imes 100\% = 59.6\%$$

Question 13

Solve for $$x in $$the equation $$2x + 8 = 14.$$

Accepted Answer

$$x = 3$$

Question 14

Which equation correctly converts Fahrenheit temperature ($$T_F) to $$Celsius temperature ($$T_C$$)?

Accepted Answer

$$T_C = \frac{T_F - 32}{1.8}$$

Question 15

A line graph shows the volume of a balloon increasing as the temperature increases. What type of relationship is this?

Accepted Answer

Direct relationship

Question 16

Which of the following numbers is correctly written in scientific notation?

Accepted Answer

$$8 	imes 10$$^{-6}$$

Question 17

Convert $$1.8 	imes 10^5$ to standard notation.

Accepted Answer

$$180,000$$

Question 18

A nurse administers Tylenol to a child with a fever. The graph of body temperature versus time shows a decrease in temperature. What is measured on the vertical axis?

Accepted Answer

Body temperature (°C)

Question 19

Which of the following is a correct step in active learning for chemistry?

Accepted Answer

Reading each Learning Goal for an overview of the material.

Question 20

Which of the following best describes the function of sodium lauryl sulfate in toothpaste?

Accepted Answer

Used to loosen plaque.

Chapter 1: Chemistry in Our Lives – Foundations and Essential Skills

Study Guide - Practice Questions

Study Guide - Flashcards