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 mL

Question 2

Which of the following is a quantitative observation?

Accepted Answer

The mass of the piece of copper was 2.45 grams

Question 3

Sulfur is a yellow element. The color yellow is a:

Accepted Answer

Physical property

Question 4

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

Accepted Answer

Chemical property

Question 5

Volume is measured in:

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

Choose the number that is in correct scientific notation.

Accepted Answer

$$1.13 	imes 10^3$

Question 8

A mixture of sand and salt is an example of a:

Accepted Answer

Heterogeneous mixture

Question 9

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

Accepted Answer

Compound

Question 10

A centrifuge separates compounds on the basis of:

Accepted Answer

Density

Question 11

Rutherford discovered that atoms had a nucleus that contained most of the mass of the atom. The nucleus contains:

Accepted Answer

Protons and neutrons

Question 12

The atomic particle(s) that does not have a charge is:

Accepted Answer

Neutron

Question 13

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

Accepted Answer

Magnesium

Question 14

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

Accepted Answer

Mass number

Question 15

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

Accepted Answer

Family or group

Question 16

Which of these elements is a noble gas?

Accepted Answer

Argon (Ar)

Question 17

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

Accepted Answer

Boiling point

Question 18

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

Accepted Answer

Liquid

Question 19

You are determining the identity of a substance. You find that it has high luster and is brittle. The substance is most likely a:

Accepted Answer

Nonmetal

Question 20

A block of brass has dimensions of $$2.0\,\mathrm{cm} 	imes 3.0\,\mathrm{cm} 	imes 4.0\,\mathrm{cm}$$ and a mass of $$20\,\mathrm{g}. $$What is the density of the block?

Accepted Answer

$$0.83\,\mathrm{g/cm^3$}$$

Fundamental Concepts in Chemistry: Matter, Measurement, and Atomic Structure

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