Question 1

Which of the following is a chemical property of matter?

Accepted Answer

Flammability

Question 2

A student mixes sand and salt in a beaker of water, stirs, and then filters the mixture. Which statement best describes the process?

Accepted Answer

A physical change occurs because the substances retain their identities and can be separated by physical means.

Question 3

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the composition is uniform throughout

Question 4

Which of the following is NOT a physical property?

Accepted Answer

Rusting

Question 5

A gold ring is labeled as 14 karat gold. Which statement is true about the ring?

Accepted Answer

It is a homogeneous mixture of gold and other metals.

Question 6

Which of the following best describes the difference between an element and a compound?

Accepted Answer

An element contains only one type of atom, while a compound contains two or more types of atoms chemically bonded.

Question 7

Which of the following is a correct chemical symbol for an element?

Accepted Answer

CO

Question 8

Which of the following changes is a chemical change?

Accepted Answer

Burning wood

Question 9

A sample of matter has a definite volume but no definite shape. Which state of matter is this?

Accepted Answer

Liquid

Question 10

Which of the following is the correct metric relationship for centi-?

Accepted Answer

$$1\ \mathrm{cm} = 10$$^{-2}$$\ \mathrm{m}$$

Question 11

Which of the following best describes a molecule?

Accepted Answer

A group of atoms (same or different) bonded together

Question 12

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Question 13

Which of the following is a correct statement about ions?

Accepted Answer

Ions have a net electrical charge, while atoms are neutral.

Question 14

Which of the following is the correct metric relationship for kilo-?

Accepted Answer

$$1\ \mathrm{km} = 10$$^{3}$$\ \mathrm{m}$$

Question 15

A student is given a sample labeled $$\mathrm{CO}_2. $$Which of the following statements is true?

Accepted Answer

It is a compound because it contains more than one type of atom chemically bonded.

Question 16

Which of the following is the correct metric relationship for milli-?

Accepted Answer

$$1\ \mathrm{mm} = 10$$^{-3}$$\ \mathrm{m}$$

Question 17

Which of the following best describes a physical change?

Accepted Answer

A change that alters only the physical properties, not the chemical composition

Question 18

Which of the following is a correct example of a chemical symbol for an element?

Accepted Answer

Na

Question 19

A student is asked to classify the following: $$\mathrm{O}_2. $$Which of the following is correct?

Accepted Answer

It is an element and a molecule.

Question 20

Which of the following best describes the macro view and micro view of matter?

Accepted Answer

Macro view refers to properties visible to the naked eye, while micro view refers to atomic-level interactions.

Introduction to Chemistry: Matter, Properties, and Measurement

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