Unit 1 - The Science of Chemistry

Question 1

Silver is which of the following?

Accepted Answer

Pure Substance

Question 2

Salt water, when fully dissolved and mixed, is which of the following?

Accepted Answer

Homogenous Mixture

Question 3

Anything that has mass and volume is known as what?

Accepted Answer

Matter

Question 4

What are the two types of pure substances?

Accepted Answer

Elements and Compounds

Question 5

What is the structure of liquid molecules?

Accepted Answer

Definite Volume/Takes shape of container

Question 6

What is a mixture?

Accepted Answer

2 or more substances physically mixed

Question 7

Which of the following is NOT one way to identify if a chemical change has occurred?

Accepted Answer

Changing of State

Question 8

Is iron rusting a physical or chemical change?

Accepted Answer

Chemical

Question 9

Is color a physical property or a chemical property?

Accepted Answer

Physical Property

Question 10

The quantity of matter in an object is known as what?

Accepted Answer

Mass

Question 11

A number of different molecular forms of an element is known as what? (Ex. carbon can be diamond or graphite)

Accepted Answer

Allotrope

Question 12

In the reaction below, identify the reactant(s): 2 H2O2 → 2 H2O + O2

Accepted Answer

H2O2

Question 13

The smallest unit of an element that retains the properties of that element is known as what?

Accepted Answer

Atom

Question 14

Is water turning into steam a physical or chemical change?

Accepted Answer

Physical

Question 15

Is boiling point a physical property or chemical property?

Accepted Answer

Physical Property

Question 16

Salt is which of the following?

Accepted Answer

Compound

Question 17

What is the structure of gas molecules?

Accepted Answer

Indefinite Volume/Indefinite Shape

Question 18

Changes in which the identity of a substance DOES change is what kind of change?

Accepted Answer

Chemical

Question 19

What is the difference between a homogenous mixture and a heterogeneous mixture?

Accepted Answer

Ho - Uniform/ He - Not Uniform

Question 20

Changes in which the identity of a substance DOES NOT change is what kind of change?

Accepted Answer

Physical

Question 21

Volume measures the amount of space an object occupies. What two units do we measure it in?

Accepted Answer

cm3 and mL

Question 22

Josh has a ball that has a density of 0.5 g/mL and a volume of 50 mL. What is the mass?

Accepted Answer

25 g

Question 23

Emily has a sample of tungsten with a mass of 10 g and a volume of 2 cm3. What is the density of the tungsten?

Accepted Answer

5 g/cm3

Question 24

A 2 g rock is dropped in a GC with 6 mL of water in it. Volume rose from 6 mL to 16 mL. What's the density of the rock?

Accepted Answer

0.2 g/mL

Question 25

What substance is made up of more than one type of element chemically bonded together?

Accepted Answer

Compound

Question 26

Which word best describes the following: The study of matter and the changes it undergoes

Accepted Answer

Chemistry

Question 27

What are the three states of matter discussed in class?

Accepted Answer

Liquid, Gas, Solid

Question 28

A pure substance that contains one type of matter that cannot be broken down is known as what?

Accepted Answer

Element

Question 29

What is the formula for density?

Accepted Answer

Mass/Volume

Question 30

What is the structure of solid molecules?

Accepted Answer

Definite Volume/Definte Shape

Unit 1 - The Science of Chemistry

Questions 30

Unit 1 - The Science of Chemistry

Questions 30