Q: Which of the following is the correct setup to convert $$5.0 cm to $$meters?

$$5.0 \ \mathrm{cm} \times \frac{1 \ \mathrm{m}}{100 \ \mathrm{cm}}$$

Question 1

Which of the following statements correctly describes the location of elements on the periodic table?

Accepted Answer

Groups are the vertical columns, and periods are the horizontal rows.

Question 2

Which of the following elements is a nonmetal?

Accepted Answer

Oxygen (O)

Question 3

How many total atoms are present in one molecule of $$\mathrm{C_6H_{12}O_6$}$$?

Accepted Answer

$$18$$

Question 4

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

Accepted Answer

Burning wood in a fireplace

Question 5

A student measures the length of a metal rod as $$12.34 cm $$using a ruler marked to the nearest $$0.01 cm. $$How many significant figures are in this measurement?

Accepted Answer

$$4$$

Question 6

A graduated cylinder contains $$25.0 mL of $$water. After a metal object is submerged, the water level rises to $$32.5 mL. $$What is the volume of the metal object?

Accepted Answer

$$7.5 mL$$

Question 7

Which of the following numbers has three significant figures?

Accepted Answer

$$0.00450$$

Question 8

Round the result of $$3.456 + 2.1 to $$the correct number of significant figures.

Accepted Answer

$$5.6$$

Question 9

Calculate the density of a substance if its mass is $$15.0 g $$and its volume is $$3.0 mL.$$

Accepted Answer

$$5.0$$ \mathrm{g/mL}$

Question 10

Convert $$0.00056 to $$scientific notation.

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 11

Which prefix and symbol represent $$10^{-3}$$?

Accepted Answer

milli-, $$m$$

Question 12

A patient is prescribed $$0.25 g of a $$medication. How many milligrams is this?

Accepted Answer

$$250 mg$$

Question 13

Which of the following is the correct setup to convert $$5.0 cm to $$meters?

Accepted Answer

$$5.0 \ \mathrm{cm} 	imes \frac{1 \ \mathrm{m}}{100 \ \mathrm{cm}}$$

Question 14

A nurse needs to administer a $$0.50 g $$dose of a drug. The available solution contains $$100 mg/mL. $$What volume in mL should be given?

Accepted Answer

$$5.0 mL$$

Question 15

Which measurement contains the greatest number of significant figures?

Accepted Answer

$$0.03040$$

Question 16

Which of the following is a physical change?

Accepted Answer

Boiling of water

Question 17

A measurement is recorded as $$0.020 L. $$How many certain and uncertain digits are present?

Accepted Answer

2 certain, 1 uncertain

Question 18

Perform the following calculation and round to the correct number of significant figures: $$4.56 	imes 1.4$$

Accepted Answer

$$6.4$$

Question 19

Convert $$3.2 	imes 10^3$ to decimal notation.

Accepted Answer

$$3200$$

Question 20

A sample has a mass of $$8.0 g $$and a volume of $$2.0 mL. If $$you cut the sample in half, what is the density of one half?

Accepted Answer

$$4.0$$ \mathrm{g/mL}$

Chapter 1 Study Guide: Chemistry Basics - Matter and Measurement

Guida di studio - Domande di pratica

Study guide - Flashcard