Q: A student calculates the percentage of aspirin in a tablet. The tablet contains 325 mg of aspirin and has a total mass of 545 mg. What is the percentage of aspirin in the tablet?

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

Q: A chemist has 8 chemistry books out of a total of 32 books. What percentage of the books are chemistry books?

$$\frac{8}{32} \times 100\% = 25\%$$

Question 1

Which of the following is NOT considered matter?

Accepted Answer

Sunlight

Question 2

A scientist observes that a patient’s fever decreases after taking Tylenol. What part of the scientific method does this represent?

Accepted Answer

Observation

Question 3

Which of the following is an example of a chemical found in everyday kitchen items?

Accepted Answer

All of the above

Question 4

A student calculates the percentage of aspirin in a tablet. The 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 5

Which of the following activities should NOT be included in your study plan for learning chemistry?

Accepted Answer

Skipping lectures

Question 6

What is the correct scientific notation for the number 64,000?

Accepted Answer

$$6.4 	imes 10^4$

Question 7

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

Accepted Answer

A possible explanation for an observation

Question 8

If you add $$12$$ and $$-15$$, what is the result?

Accepted Answer

$$-3$$

Question 9

Which of the following is an experiment?

Accepted Answer

I will stop eating salsa for 10 days, then eat salsa twice a day for the next 10 days and record each time I get heartburn.

Question 10

What is the place value of the digit '4' in the number $$6.407$$?

Accepted Answer

Tenths

Question 11

A graph shows the volume of a gas in a balloon plotted against its temperature. If the line on the graph slopes upward, what does this indicate?

Accepted Answer

The volume of the gas increases as temperature increases.

Question 12

Which of the following is the correct scientific notation for $$0.021$$?

Accepted Answer

$$2.1 	imes 10$$^{-2}$$

Question 13

Which of the following is NOT a chemical?

Accepted Answer

Sunlight

Question 14

If $$2x + 8 = 14$$, what is the value of $$x$$?

Accepted Answer

$$x = 3$$

Question 15

Which of the following is the best example of applying chemistry in a real-world scenario?

Accepted Answer

Using antacid tablets to neutralize stomach acid

Question 16

What is the result of multiplying $$-2$$ and $$3$$?

Accepted Answer

$$-6$$

Question 17

Which of the following activities will help you be successful at learning chemistry?

Accepted Answer

All of these

Question 18

A chemist has 8 chemistry books out of a total of 32 books. What percentage of the books are chemistry books?

Accepted Answer

$$\frac{8}{32} 	imes 100\% = 25\%$$

Question 19

Which of the following is the correct scientific notation for 7,200,000?

Accepted Answer

$$7.2 	imes 10^6$

Chemistry 110: Introduction to Chemistry for Allied Health Majors – Chapter 1 Study Notes

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