Question 1

A graduated cylinder contains a green liquid. The meniscus is at the 84.0 mL mark. What is the correct reading for the volume in the cylinder?

Accepted Answer

$$84.0\ \mathrm{mL}$$

Question 2

Which of the following is a quantitative observation?

Accepted Answer

The mass of the piece of copper was $$2.45\ \mathrm{g}.$$

Question 3

Sulfur is a yellow element. The color yellow is an example of which type of property?

Accepted Answer

Physical property

Question 4

A student finds that sodium does not react with hydrochloric acid. This is an example of:

Accepted Answer

Chemical property

Question 5

Volume is measured in which of the following units?

Accepted Answer

Liters

Question 6

Repeating a measurement multiple times and comparing the measurements to each other will provide information on the ________ of the measurements.

Accepted Answer

Precision

Question 7

Which of the following numbers is in correct scientific notation?

Accepted Answer

$$1.13 	imes 10^3$

Question 8

A mixture of sand and salt is an example of:

Accepted Answer

Heterogeneous mixture

Question 9

Water ($$\mathrm{H_2O}) is an $$example of:

Accepted Answer

Compound

Question 10

A centrifuge separates compounds on the basis of:

Accepted Answer

Density

Question 11

Which subatomic particle does not have a charge?

Accepted Answer

Neutron

Question 12

An element has an atomic number of $$12. $$The element is:

Accepted Answer

Magnesium

Question 13

The sum of the number of protons and neutrons in an isotope is equal to the:

Accepted Answer

Mass number

Question 14

Elements that have the same number of valence electrons are in the same:

Accepted Answer

Family or group

Question 15

Which of these elements is a noble gas?

Accepted Answer

Argon ($$\mathrm{Ar})$$

Question 16

A substance goes from the liquid to the gas phase at the:

Accepted Answer

Boiling point

Question 17

The phase of matter in which a substance has definite volume and indefinite shape is the:

Accepted Answer

Liquid

Question 18

Water boiling is an example of a:

Accepted Answer

Physical change

Question 19

A Bunsen burner flame burning is an example of a:

Accepted Answer

Chemical change

Question 20

Which element is represented by the electron configuration $$1s^2$$\ $$2s^2$$\ $$2p^6$$?

Accepted Answer

Neon

Introductory Chemistry Study Guide: Properties, Measurement, and Atomic Structure

스터디 가이드 - 연습 문제