Question 1

Which of the following best describes the arrangement and movement of particles in a solid?

Accepted Answer

Particles are closely packed in a fixed, orderly arrangement and vibrate in place.

Question 2

Which of the following is an example of a homogeneous mixture?

Accepted Answer

Saltwater

Question 3

Convert $$0.000345 to $$scientific notation.

Accepted Answer

$$3.45 	imes 10$$^{-4}$$

Question 4

A patient’s mass is measured as $$154$$ pounds. What is this mass in kilograms? (Given: $$1$$ pound $$= 453.6 g)$$

Accepted Answer

$$69.9 kg$$

Question 5

Which of the following is the correct SI unit for the density of a liquid?

Accepted Answer

$$\mathrm{g/cm^3$}$$

Question 6

A cube of metal has a mass of $$54.0 g $$and a volume of $$20.0 cm$^3. $$What is its density?

Accepted Answer

$$2.70$$ \mathrm{$$g/cm^3$$}$

Question 7

A sample of ethanol has a density of $$0.789 g/mL. $$What is the mass of $$250 mL of $$ethanol?

Accepted Answer

$$197 g$$

Question 8

Which of the following statements is NOT part of Dalton’s atomic theory?

Accepted Answer

Atoms can be created or destroyed in chemical reactions.

Question 9

How many protons, neutrons, and electrons are in $$^{37}_{17}\mathrm{Cl}^-$$?

Accepted Answer

17 protons, 20 neutrons, 18 electrons

Question 10

Which of the following elements is a metalloid?

Accepted Answer

Silicon

Question 11

A naturally occurring element has two isotopes: $$^{10}\mathrm{B} ($$mass $$= 10.0129 u$$, abundance $$= 19.9\%) $$and $$^{11}\mathrm{B} ($$mass $$= 11.0093 u$$, abundance $$= 80.1\%). $$What is the average atomic mass of boron?

Accepted Answer

$$10.81$$ \mathrm{u}$

Question 12

Which group on the periodic table contains the noble gases?

Accepted Answer

Group 18

Question 13

Which of the following is a compound?

Accepted Answer

Water ($$\mathrm{H_2O})$$

Question 14

Convert $$5.0$$ miles to kilometers. (Given: $$1$$ mile $$= 1.609 km)$$

Accepted Answer

$$8.0 km$$

Question 15

Which of pipeline below correctly lists the SI prefixes from largest to smallest?

Accepted Answer

kilo, centi, milli, micro

Question 16

A rectangular block has dimensions $$2.0 cm$$ $$	imes$$ $$3.0 cm$$ $$	imes$$ $$4.0 cm $$and a mass of $$48.0 g. $$What is its density?

Accepted Answer

$$2.0$$ \mathrm{$$g/cm^3$$}$

Question 17

Which of the following best describes an isotope?

Accepted Answer

Atoms of the same element with different numbers of neutrons

Question 18

A student measures a length as $$12.0$$ inches. What is this length in centimeters? (Given: $$1$$ inch $$= 2.54 cm$$, exact)

Accepted Answer

$$30.5 cm$$

Question 19

Which of the following statements best describes the law of conservation of mass?

Accepted Answer

Mass is neither created nor destroyed in a chemical reaction.

Question 20

Which of the following elements is a nonmetal?

Accepted Answer

Sulfur

General Chemistry Study Guide: Matter, Measurement, and Atomic Theory

Study Guide - Practice Questions

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