Question 1

Which of the following is the correct scientific notation for the number 0.000 001 01?

Accepted Answer

$$1.01 	imes 10$$^{-6}$$

Question 2

A graduated cylinder contains a liquid as shown in the diagram. What is the correct volume reading?

Accepted Answer

$$24.5\ \mathrm{mL}$$

Question 3

Which of the following is a chemical property?

Accepted Answer

Reacts with oxygen

Question 4

Which of the following is a homogeneous mixture?

Accepted Answer

Salt water

Question 5

Which of the following is an example of a physical change?

Accepted Answer

Boiling water

Question 6

A sample of gas occupies 5.00 L at 1.00 atm. If the pressure is increased to 2.00 atm at constant temperature, what is the new volume?

Accepted Answer

$$2.50\ \mathrm{L}$$

Question 7

Which of the following elements is a noble gas?

Accepted Answer

Neon

Question 8

Which of the following is the correct electron configuration for a neutral atom of sodium ($$Z=11$$)?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^6$$\ $$3s^1$$

Question 9

Which of the following is a property of metals?

Accepted Answer

Good conductor of electricity

Question 10

Which of the following is the correct formula for magnesium chloride?

Accepted Answer

$$\mathrm{MgCl}_2$$

Question 11

Which of the following is a chemical change?

Accepted Answer

Burning of gasoline

Question 12

Which of the following is the correct name for $$\mathrm{CO}_2$$?

Accepted Answer

Carbon dioxide

Question 13

Which of the following is a property of nonmetals?

Accepted Answer

Poor conductor of electricity

Question 14

Which of the following is the correct formula for dinitrogen tetroxide?

Accepted Answer

$$\mathrm{N}_2\mathrm{O}_4$$

Question 15

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Question 16

Which of the following is the correct name for $$\mathrm{Na}_2\mathrm{SO}_4$$?

Accepted Answer

Sodium sulfate

Question 17

Which of the following is the correct formula for calcium phosphate?

Accepted Answer

$$\mathrm{Ca}_3(\mathrm{PO}_4)_2$$

Question 18

Which of the following is the correct name for $$\mathrm{KNO}_3$$?

Accepted Answer

Potassium nitrate

Question 19

Which of the following is the correct formula for aluminum sulfate?

Accepted Answer

$$\mathrm{Al}_2(\mathrm{SO}_4)_3$$

Question 20

Which of the following is the correct name for $$\mathrm{Fe}_2\mathrm{O}_3$$?

Accepted Answer

Iron(III) oxide

GOB Chemistry: Chemistry and Measurements, Matter and Energy, and Atoms and Elements

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