Question 1

Which of the following best describes a compound?

Accepted Answer

A substance that can be decomposed into simpler substances.

Question 2

Which property is intensive and does NOT depend on the amount of substance present?

Accepted Answer

Density

Question 3

A student measures the boiling point of water as 99.8 °C, 99.9 °C, and 100.0 °C. These measurements are close to each other but not to the accepted value of 100.0 °C. What do these measurements demonstrate?

Accepted Answer

Low accuracy, high precision

Question 4

Which separation technique would be most effective for separating a mixture of sand and salt water?

Accepted Answer

Filtration

Question 5

A sample of white gold contains gold and palladium, and its composition varies between samples. How should white gold be classified?

Accepted Answer

Homogeneous mixture

Question 6

Which of the following is a physical change?

Accepted Answer

Melting of ice

Question 7

What is the density of a substance if a 250 mL sample has a mass of 200 g? Use the formula $D = \frac{m}{V}$.

Accepted Answer

$0.8\ \mathrm{g/mL}$

Question 8

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

Accepted Answer

Flammability

Question 9

Convert 25 °C to Kelvin using the formula $K = ^\circ C + 273.15$.

Accepted Answer

$298.15\ K$

Question 10

Which of the following statements about significant figures is correct?

Accepted Answer

Zeroes at the end of a number are significant if a decimal point is written.

Question 11

A solution is best described as:

Accepted Answer

A homogeneous mixture

Question 12

Which of the following is NOT a base SI unit?

Accepted Answer

Liter

Question 13

A student measures the mass of an object as 12.30 g, 12.31 g, and 12.29 g. The true mass is 12.50 g. Which statement is correct?

Accepted Answer

The measurements are precise but not accurate.

Question 14

Which of the following is an extensive property?

Accepted Answer

Mass

Question 15

Which method would you use to separate colored dyes in ink?

Accepted Answer

Chromatography

Question 16

A sample contains only one type of atom. How is it classified?

Accepted Answer

Element

Question 17

Which of the following is a chemical change?

Accepted Answer

Burning of hydrogen in oxygen to form water

Question 18

What is the mass of a liquid with a density of $1.25\ \mathrm{g/mL}$ and a volume of $200\ \mathrm{mL}$? Use $m = D 	imes V$.

Accepted Answer

$250\ \mathrm{g}$

Question 19

Which of the following is an example of an inexact number in science?

Accepted Answer

A mass measured using a balance

Question 20

Which equation correctly converts Celsius to Fahrenheit?

Accepted Answer

$^\circ F = \frac{9}{5}(^\circ C) + 32$

Chapter 1: Introduction to Matter and Measurement – General Chemistry Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards