Chemistry 9

Matter

100

This type of pure substance is made of only one kind of atom and cannot be broken down by chemical means.

element

200

Water (H₂O) and carbon dioxide (CO₂) are examples of this type of pure substance made from two or more elements chemically combined.

compound

300

This type of mixture has a blended/ uniform appearance, and is made of a substance being dissolved in another substance. 

solution!

400

Chicken noodle soup would be classified as this type of mixture. 

Heterogenous 

500

True or false? All diatomic molecules are pure substances. 

True!

Count the number of atoms!

100

Al₂O₃

5

200

2LiF

4

300

3CO₂

9

400

Na₂SO₂

5

500

Ba₃(PO₄)₂

13

True or False

100

Boiling Water is a PHYSICAL change?

True

200

Burning a match is a Physical Change?

False

300

A chemical reaction involves protons moving between atoms.

FALSE. Only electrons transfer between atoms. 

400

Aluminum Oxide is an Ionic Compound

True

500

Carbon Monoxide is an Ionic Compound?

False

Don't be a BOHR (rutherford diagram)

100

Helium

1 Shell 2 e-

200

Lithium

2 Shells, 3 e- total,

300

Oxygen

2 shells, 8 e- total

400

Sodium

3 Shells, 11 e- total

500

Chlorine

3 Shells, 17 e- total

Compounds

100

This type of compound forms when a metal transfers electrons to a nonmetal, creating positive and negative ions.

Ionic compound

200

The compound NaCl is commonly known by this everyday name found on dining tables.

Table salt

300

This type of bond forms when atoms share electrons, which is typical in molecular compounds like CO₂.

Covalent bond

400

What charge does oxygen have when it forms a compound with hydrogen? (H₂O)

No charge! Molecular compounds do not form ions

500

What is the formula for the ionic compound that forms between calcium and fluorine?

CaF₂