Grade 9 Science: Chemistry

Periodic Table

100

The rows of the periodic table are also called

Periods!

200

An elements atomic number is equal to the number of ________?

Protons!

300

How many Neutrons does Flourine have? (Show the calculation!

10!

400

How many protons does Magnesium have?

12!

500

How many electrons does Nitrogen have?

2!

Physical or Chemical

100

Burning a piece of fire wood

What is chemical

200

Vinegar plus baking soda creates a new gas substance

What is chemical

300

Water vapour turns back into water

What is physical

400

Cooking pancakes

What is physical

500

A rusting nail

What is chemical

Element, Compound, Homogenous, or Heterogenous

100

Sodium

Element

200

A salad

Hetergoenous Mixture

300

H₂O

Compound!

400

Diamond

Element! (Carbon)

500

Milk

Homogenous Mixture

Naming and Formula

100

What is the name of NaCl

Sodium chloride!

200

What is the name of K₂S?

Potassium Sulfide

300

What is the name of P₂F₅

Dipotassium pentaflouride

400

Write the chemical formula for Magnesium oxide

MgO

500

Write the chemical formula of Trinitrogen hexaflouride

N₃F₆

General Chemistry

100

Lithium, Sodium, Potassium, Rubidium, and Caesium and part of what family on the periodic table?

Alkali metals

200

The number of protons in Mercury (Hg)

79!

300

What is an ionic compound?

A metal and a non-metal

400

What is a molecular compound?

Two non-metals

500

What is the name of the line that splits the periodic table into metals and non-metal?

The staircase!