Question 1

Which of the following best describes the arrangement and movement of particles in a gas, as shown in the first image?

Accepted Answer

Particles are far apart and disorganized.

Question 2

A liquid is poured into a container. Which property distinguishes a liquid from a solid, based on the second image?

Accepted Answer

A liquid takes the shape of its container but has a fixed volume.

Question 3

Which change is illustrated by water boiling in the third image, and what type of change is it?

Accepted Answer

Water molecules change from liquid to gas; this is a physical change.

Question 4

Based on the fourth image, which of the following is a homogeneous mixture?

Accepted Answer

Salt dissolved in water.

Question 5

The fifth image shows a cup of tea with a stick of rock sugar. What type of mixture is formed when the sugar dissolves in the tea?

Accepted Answer

A homogeneous mixture (solution).

Question 6

In the sixth image, a plate contains a mixture of rice and pepper. Which statement best describes this mixture?

Accepted Answer

It is a heterogeneous mixture.

Question 7

The seventh image shows a magnet separating iron filings from a mixture. What property allows this separation?

Accepted Answer

Magnetic properties.

Question 8

According to the eighth image, which SI base unit is used to measure temperature?

Accepted Answer

Kelvin (K)

Question 9

If a measurement is recorded as 0.000 110 m, which metric prefix would be most appropriate to express this value, based on the ninth image?

Accepted Answer

Pico (p)

Question 10

A person is holding three Grammy Awards, as shown in the tenth image. What type of number is '3' in this context?

Accepted Answer

An exact number.

Question 11

The eleventh image shows a graduated cylinder. Where should the reading be taken for the most accurate measurement?

Accepted Answer

At the bottom of the meniscus.

Question 12

Based on the twelfth and thirteenth images, which ruler allows for a more precise measurement of the wooden stick?

Accepted Answer

The ruler with markings every 0.1 cm.

Question 13

The fourteenth and fifteenth images show a beaker and a graduated cylinder. Which is more appropriate for measuring 20 mL of water accurately?

Accepted Answer

Graduated cylinder

Question 14

In the sixteenth image, two scales are used to weigh a pistachio. Which scale provides a more accurate measurement?

Accepted Answer

The scale with markings every 0.1 g.

Question 15

The seventeenth image shows three students' mass measurements. Which student is both accurate and precise?

Accepted Answer

Student C

Question 16

Based on the eighteenth image, how many significant figures should the number 49 be rounded to if the answer requires 2 significant figures?

Accepted Answer

2

Question 17

The nineteenth image shows the calculation of an antilogarithm. If the mantissa has two digits, how many significant figures should the result have?

Accepted Answer

Two

Question 18

In the twentieth image, a football stadium is shown. If the stadium holds 70,000 people, what type of number is this?

Accepted Answer

An exact number.

Question 19

The twenty-first image shows a mosquito. If the length of the mosquito is measured as 0.0052 m, how many significant figures are in this measurement?

Accepted Answer

Four

General Chemistry I: Foundations of Matter, Measurement, and Atomic Theory

Study Guide - Practice Questions