Quiz Material (Basic Chem Terms)

Question 1

Matter

Answer 1

Anything that has mass and takes up volume

Question 2

States of Matter

Answer 2

Solid, Liquid, Gas

Question 3

Solids have…

Answer 3

• Definite shape and volume
• Particles that are close together in a fixed arrangement
• Slow moving particles
• Non compressible

Question 4

Liquids have…

Answer 4

• Indefinite shape but definite volume
• Same shape as container
• Close together but mobile particles
• Slow moving particles
• Not compressible

Question 5

Gases have….

Answer 5

• Indefinite shape and volume
• Same shape and volume as container
• Very fast moving particles
• Particles that are far apart
• Compressible

Question 6

What is an atom?

Answer 6

Smallest particle of an element that has the properties of an element

Question 7

What is a molecule?

Answer 7

Consists of two or more atoms connected by CHEMICAL BONDS

Question 8

Law of Conservation of Mass

Answer 8

During a chemical reaction, mass is conserved (mass cannot be gained or lost)

Question 9

Mixture

Answer 9

More than one component that come together in a variable ratio

Question 10

Pure substance

Answer 10

Consists of one component only

Question 11

Heterogenous mixture

Answer 11

Has a nonuniform composition; you can visibly see the separate ingredients

Question 12

Homogenous mixture

Answer 12

Has a uniform composition; you cannot visibly pinpoint the different components

Question 13

What’s important to remember about compounds?

Answer 13

A compound is composed of two or more elements that come together in a FIXED RATIO

Question 14

Mixture is matter that consists of….

Answer 14

• Two or more substances that are PHYSICALLY mixed, not chemically combined
• Substances that can be separated by physical methods
• Two or more substances in different proportions

Question 15

Physical Properties

Answer 15

• Are observed without changing the identity of a substance

- Include shape, color, density, and melting/boiling points

Question 16

Physical Changes

Answer 16

-The state if the substance can change but the identity and composition of it cannot change

Question 17

Name physical properties

Answer 17

• Color
• Odor
• Luster
• Melting Point
• Boiling Point

Question 18

Name physical changes

Answer 18

• Water boiling or freezing
• Cutting a substance into smaller pieces
• Dissolving a substance like sugar into water

Question 19

Chemical Properties

Answer 19

Ability of a substance to change into a new substance

Question 20

Chemical change examples

Answer 20

• Burning
• Rust formation
• Caramelization
• Tarnishing of silver

Question 21

What is the difference between intensive and extensive properties?

Answer 21

• Intensive properties do not change, regardless of how much of a sample is being observed. For example, silver remains silver in color even if we increase the amount of it.
• Extensive properties depend exclusively on the amount of a substance being examined, such as mass and volume.

Question 22

What is an exact number?

Answer 22

-A number that is the result of counting objects (no room for error)

Question 23

An inexact number?

Answer 23

-Number resulting from measurements or observations (some uncertainty present)