The Periodic Table

Question 1

What is an element ?

Answer 1

An element is a pure substance made up of only one type of atom

Question 2

What is the difference between a mixture and a compound ?

Answer 2

A mixture is elements mixed together but not chemically bonded and a compound is a mixture of elements but they are chemically bonded

Question 3

What are some of the signs of the chemical reaction name 3 ?

Answer 3

Colour change
Gas produced
Solid formed from soloution

Question 4

How would you write iron oxide in its formula form and what is the equation in its chemical form there are 2 oxygen atoms ?

Answer 4

Fe + O2 = FeO2

Question 5

Properties of metals and non-metals name 3 ?

Answer 5

Metals are good conductors of heat and electricity, malleable and shiny when polished

Non-metals are brittle, not shiny and not good conductors of heat and electricity

Question 6

What is the most reactive group in the periodic table and name all of them ?

Answer 6

Alkali metals
Potassium 
Lithium
Sodium
Caesium
Rubidium
Francium

Question 7

What are halogens and noble gases ?

Answer 7

Halogens are reactive non-metals there reactivity decrease down the group
Noble gases are very unreactive gases that are not found mostly as compounds

Question 8

What solution does a metal oxide and non-metal oxide make when created ?

Answer 8

Metal oxide make alkaline solutions while non-metal oxide make acidic solutions

Question 9

Name one halogen and on noble gas

Answer 9

A halogen is chlorine and noble gas is argon