Chapter 1 | Pure Substances And Mixtures

Question 1

What is a pure substance?

Answer 1

It’s one kind of particle

Question 2

What is a mixture?

Answer 2

2 or more types of particles

Question 3

What’s a homogeneous mixture?

Answer 3

Homogeneous means you can’t tell a mixture is comprised of 2 substances to the naked eye

Or

2 or more different substances that cannot be distilled without magnification

Example: Ethyl Alcohol and Water

Question 4

What’s a heterogenous mixture?

Answer 4

It’s a mixture with greater than 2 or more substances we can tell apart with the naked eye

Example: Strawberry Milkshakes

Question 5

What are the different kinds of homogeneous mixtures?

Answer 5

1. Colloids

2. Solutions

Question 6

What’s a Colloid?

Answer 6

Looks like one pure substance, but is actually a homogeneous mixture of two or more particles that can be told apart with magnification

Question 7

What’s a solution?

Answer 7

Two or more substances that we can’t tell apart

Question 8

What are the two things in solutions?

Answer 8

1. Solute :
   - Dissolves into a solution
2. Solvent :
   - Dissolves the solute

Question 9

What’s an Alloy?

Answer 9

It’s a solution with metals ;

Solution/Alloy

Example

85% + 15% = 100%
Copper + Tin = Bronze