Topic 6 Chemical Equations and Reactions Flashcards
What is an element
Made up of one type of atom for example oxygen is made up of oxygen atoms only
What is a compound
Made up of 2 or more elements chemically joined together e.g. Water is H20
What is a mixture
Made up of elements or compounds and is easy to separate
Where are all the elements found
On the periodic table
Which element has the symbol C
Is it a metal or non metal
Carbon
NOn metal
What is the symbol of Magnesium
Mg
What is the symbol for Iodine
I
What element has the symbol Fe
Iron
What element has the symbol Zn
Zinc
What is the symbol for Potassium
Is it a metal or non metal
K
Metal
What are the 2 parts that make up an atom
Protons, neutrons and electrons
When substances react together what is the name of the substance made
The substance made is the product
What is observed when magnesium is burnt
A bright white light
It changes from being a silvery metal solid to a white powder
What is one safety precaution required when burning magnesium
Do not look at it directly - use darkened glass to look at it
What is the word equation for the reaction of burning magnesium
Magnesium + Oxygen ——-> Magnesium Oxide
What gas in air is needed to burn magnesium
Oxygen
When 2 elements react together what is made
A compound
When 2 elements react together the name of the product always has 2 names - the first name is the METAL and the second name tells you what the metal reacted with. The second element name will always end in IDE
What is the name of the product formed when Magnesium metal reacts with Suflur
Magnesium Sulfide
What is the name of the product formed when Iron reacts with oxygen
Iron Oxide
What is the name of the product formed when bromine reacts with zinc
Zinc is the metal so always goes as first name
Product is then Zinc Bromide
If there are 3 elements then the metal name goes first. If the other 2 elements are carbon and oxygen a CARBONATE is formed.
If Zinc reacts with carbon and oxygen what is made
Zinc Carbonate
If there are 3 elements then the metal name goes first. If the other 2 elements are nitrogen and oxygen a NITRATE is formed.
If Magnesium reacts with nitrogen and oxygen what is made
Magnesium Nitrate
Look at the formula of the following compound - CuSO4. (the 4 number should be down low)
How many atoms of each element are there in this compound
1 Copper (Cu)
1 Sulfur (S)
4 Oxygen (O)
What 3 things are needed in a combustion reaction
Warmth, Fuel, Oxygen
What sort of reaction is a combustion reaction
An oxidation reaction - it needs oxygen
What metal can rust
Iron or steel
Rusting is an example of what type of reaction
Oxidation
What is the compound name for rust
Iron Oxide
What will make iron rust quicker
Water
Salt
Give some examples of how rusting can be slowed down
painting
oiling moveable parts e.g. chain on bike
galvanised
chrome plate
sacrificial protection
