Chapter 1: Matter and Classification

Question 1

What is Matter?

Answer 1

Matter can be regarded as anything that occupies space and has mass.

Question 2

What is a Substance?

Answer 2

A substance is a form of matter that has a constant composition and distinct properties.

Question 3

What is a mixture?

Answer 3

• A mixture is something that consists of at least two different substances.
• The substances retain their invidual properties.
• The substances are not chemically bonded together.

Question 4

How are mixtures seperated?

Answer 4

By physical means

Question 5

What are the two different types of mixtures?

Answer 5

Homogeneous and Heterogeneous mixtures.

Question 6

What is a Homogeneous mixture?

Answer 6

• Mixtures have a uniform composition.

- Also known as solution

Question 7

What is the solvent in a homogeneous mixtures?

Answer 7

The substance present in the largest amount in a homogeneous mixture.

Question 8

What is the solute in a mixture?

Answer 8

The solute is the substance present in the smaller amount in the homogeneous mixture.

Question 9

What is a Heterogeneous mixture?

Answer 9

• Has a non-uniform composition

- The substances do not dissolve in each other.

Question 10

What are supensions?

Answer 10

• A heterogeneous mixture of a solid mixed with a liquid.

- Can be seperated using filtration.

Question 11

Define Miscible.

Answer 11

• Two liquids that mix completely.

- Form a homogeneous mixture.

Question 12

Define immiscible

Answer 12

• Liquids that do not mix

- Form a heterogeneous mixture.

Question 13

Define Emulsion

Answer 13

• Two immiscible liquids shaken together

- The solute breaks into small droplets and forms a milky-looking liquid.

Question 14

What is a pure substance?

Answer 14

• Consists of only one type of substance

- Can be element or compound

Question 15

What is an element?

Answer 15

• The simplest of pure substances

- Can’t be broken down into simpler substances

Question 16

What is an Atom?

Answer 16

• Building blocks of matter

- Smallest particle that retains the properties of its element.

Question 17

Define what a compound is.

Answer 17

• Pure substance made up of two or more elements bonded together through chemical means.
• Have fixed chemical composition
• Substances bonded at constant ratio

Question 18

How do you separate compounds?

Answer 18

Separated by chemical means

Question 19

Define malleable.

Answer 19

Substance easily shaped or formed by hammering.

Question 20

Define ductile.

Answer 20

Substance can be stretched or drawn into wires.

Question 21

What are semi-metals?

Answer 21

Substances that exhibit both metal and non-metal properties.

Question 22

What is an electrical conductor?

Answer 22

Substance that conducts electricity easily.

Question 23

What is an electrical insulator?

Answer 23

Substance that does not allow electricity to flow through

Question 24

What is a semi-conductor?

Answer 24

Materials with an electrical conductivity between metals and non-metals

Question 25

Define heat.

Answer 25

Spontaneous flow of thermal energy from a hotter object to a cooler object.

Question 26

What’s a thermal conductor?

Answer 26

Good conductors of heat.

Question 27

Define thermal insulator.

Answer 27

Poor conductors of heat.

Question 28

What are the only 3 elements that are magnetic?

Answer 28

• Iron
• Nickel
• Cobalt