Physics gr9 - Reactions of non-metals and metals with oxygen
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19 Terms
What is the air made of?
21% oxygen
78% nitrogen
1% other gases
What does combustion mean?
It is the burning of substances in air.
What does corrosion mean?
It is the wearing away or rusting of a material, usually metal, by chemical reaction with the enviroment.
What is the general equation for metal + oxygen?
Metal + oxygen → metal oxide
State four safety points for when using a Bunsen burner.
use a lighter with an extended nozzle instead of matches to light it
keep flammable items away from it to prevent it from catching on fire
never leave a Bunsen burner unattended to
Don’t look directly into a heated beaker and never point a test tube at someone
Steel wool reacts to oxygen describe the reactants.
Steel wool is iro which is a metal
Oxygen is a gas
What is observed when steel wool reacts to oxygen?
Depending on the temperature, the steel wool will either begin to slowly rust or it will become magnetic.
Magnesium react with oxygen. Describe the reactants.
Magnesium is a metal.
Oxygen is a gas.
What happens when magnesium reacts with oxygen.
Magnesium burns in oxygen.
Describe the product after magnesium reacts with oxygen.
Once magnesium is burnt it turns into a white powder.
In what condition does rust form.
Rust is formed slowly at low temperature.
Give two methods of reducing rust formation.
The iron cam be painted using oil base paint.
You can also use electroplasty which is a process where a thin layer of metal is deposited to another object using electricity.
What is the general equation for oxygen + non-metal?
oxygen + metal → non-metal oxide
Sulfur reacts with oxygen. Describe the reactants.
Sulfur is a non-metal.
Oxygen is a gas.
Sulfur reacts with oxygen. Describe the reaction.
Sulfur burns in presence of pure oxygen with a bright blue flame.
Sulfur reacts with oxygen. Describe the product.
A colourless gas called sulfur dioxide is produced.
Carbon reacts with oxygen. Describe the reactants.
Carbon is a non-metal.
Oxygen is a gas.
Carbon reacts with oxygen. Describe the reaction.
Carbon is burnt in the presence of oxygen.
Carbon reacts with oxygen. Describe the products.
The product is called carbon dioxide and it is a colourless gas.