Question 1

Which of the following is NOT a state of matter?

Accepted Answer

heat from a barbeque grill

Question 2

Which of the following is a chemical compound?

Accepted Answer

A molecule of water ($$\mathrm{H_2O})$$

Question 3

Which of the following is an example of a mixture?

Accepted Answer

air

Question 4

Which statement regarding the solid state of matter is incorrect?

Accepted Answer

Solids can be compressed easily.

Question 5

A sample contains $$1.50 	imes 10$$^{-2}$$ kg of sodium. What is this mass in units of grams?

Accepted Answer

$$15.0 g$$

Question 6

How many moles of $$\mathrm{Fe} ($$iron) are in a can that contains $$65 g$$?

Accepted Answer

$$1.16$$ mol

Question 7

The proprietor of a rock shop insists that a nugget is pure gold. If the nugget occupies a volume of $$5.40 mL$$, what would its mass have to be if it were truly pure gold? (Density of gold = $$19.3 g/mL)$$

Accepted Answer

$$104 g$$

Question 8

Which of the following is NOT an example of a chemical property?

Accepted Answer

Sugar will dissolve in water.

Question 9

The number $$0.009525$$ correctly expressed in scientific notation is:

Accepted Answer

$$9.525 	imes 10$$^{-3}$$

Question 10

Match the type of measurement to the unit: Which unit is used for density?

Accepted Answer

grams/cm$$^3$$

Question 11

Select the correct prefix to complete the equality: $$1 g = ______ mg$$

Accepted Answer

1000

Question 12

How many centimeters are in one meter?

Accepted Answer

100 cm

Question 13

How many millimeters are in one centimeter?

Accepted Answer

10 mm

Question 14

Identify each transformation as a chemical or physical change: Burning a piece of paper.

Accepted Answer

Chemical

Question 15

How many seconds are there in $$8.0$$ hours?

Accepted Answer

$$28,800 s$$

Question 16

What is the density of a cube that has a mass of $$100.0 g $$and sides of $$5.00 cm $$each?

Accepted Answer

$$0.80 g/cm$^3$$

Question 17

How many calories of energy are required to increase the temperature of $$25$$ grams of water from $$10^\circC to$$ $$50^\circC$$? (Specific heat of water = $$1$$ cal/g$$^\circC)$$

Accepted Answer

$$1000$$ cal

Question 18

A 6-year-old child weighs $$52.0$$ lbs. If the recommended pediatric dose of amoxicillin is $$8.0 mg/kg $$per day, how many mg should she have in a day? (1 kg = 2.2 lbs)

Accepted Answer

$$189 mg$$

Intro to Chemistry Exam Study Guide with Step-by-Step Guidance

Guida di studio - Domande di pratica

Study guide - Flashcard