Section 2

Question 1

What is an element?

Answer 1

substance that can’t be broken down by any physical/chemical means

Question 2

What is a chemical formula?

Answer 2

Symbols that show elements in a compound/ratio of atoms

Question 3

What is a compound?

Answer 3

2+ elements chemically combined

Question 4

What is a mixture?

Answer 4

2+ substance in the same place but not chemically bonded

Question 5

What is a molecule?

Answer 5

2+ atoms held by covalent bonds

Question 6

What is a chemical bond?

Answer 6

Attraction that holds atoms together

Question 7

What is an atom?

Answer 7

Smallest particle of element that has the properties of that element/basic particle

Question 8

What is a particle theory?

Answer 8

The fact that all matter is made out of atoms

Question 9

When atoms combine they….

Answer 9

form a chemical bond.

Question 10

Atoms combine to form…..

Answer 10

molecules.

Question 11

Compounds are represented by….

Answer 11

a chemical formula.

Question 12

When elements chemically combine, they…..

Answer 12

form compounds w/ different properties

Question 13

What is a homogeneous mixture? Example.

Answer 13

So evenly you cannot see the different parts e.g. soy sauce

Question 14

What is a heterogeneous mixture? Example.

Answer 14

You can see the different parts of the mixture e.g. salad

Question 15

What are the 4 methods of separating mixtures?

Answer 15

distillation/evaporation/filtration/magnetic attraction