Question 1

Which of the following best defines chemistry?

Accepted Answer

The scientific study of the composition, structure, properties, and reactions of matter.

Question 2

Which of the following is NOT considered matter?

Accepted Answer

Light

Question 3

Which statement about chemicals is TRUE?

Accepted Answer

Chemicals are substances that have the same composition and properties wherever found.

Question 4

Which of the following is an example of a chemical reaction you might observe in daily life?

Accepted Answer

Antacid tablets fizzing when dropped into water

Question 5

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

Accepted Answer

Proving a hypothesis to be true

Question 6

A scientist observes that a plant grows faster in sunlight. She suggests that sunlight increases the rate of photosynthesis. What is her suggestion an example of?

Accepted Answer

A hypothesis

Question 7

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

Accepted Answer

Skipping class

Question 8

What is the place value of the underlined digit in the number 6.407 (the 7 is underlined)?

Accepted Answer

Thousandths

Question 9

Calculate the result of $$(-3) 	imes 4.$$

Accepted Answer

$$-12$$

Question 10

If you add $$-8$$ and $$5$$, what is the result?

Accepted Answer

$$-3$$

Question 11

What is the percentage of red balls if there are 5 red balls in a total of 100 balls?

Accepted Answer

$$5\%$$

Question 12

Solve for $$x in $$the equation $$3x = 12.$$

Accepted Answer

$$x = 4$$

Question 13

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

Accepted Answer

Direct relationship

Question 14

Write 64,000 in scientific notation.

Accepted Answer

$$6.4 	imes 10^4$

Question 15

Which of the following is an example of an observation in the scientific method?

Accepted Answer

You ran for 25 minutes on the treadmill, as recorded by your trainer.

Question 16

Which of the following is a correct strategy for effective learning in chemistry?

Accepted Answer

Studying at a regular pace and relating new concepts to what you already know.

Question 17

Which of the following is a chemical found in toothpaste?

Accepted Answer

A substance with the same composition and properties wherever found

Question 18

Which of the following is an example of energy, not matter?

Accepted Answer

Sound

Question 19

What is the correct scientific notation for 0.021?

Accepted Answer

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

Question 20

Which of the following best describes a scientific theory?

Accepted Answer

An explanation supported by a vast accumulation of experimental results.

Chapter 1: Chemistry in Our Lives – Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard