Types of Reactions
You set a piece of paper on fire. What type of reaction is this?
Combustion
Write a word equation for the reaction between ethanol and oxygen.
Ethanol + oxygen -> carbon dioxide + water
What is an ion?
An atom or molecule with a net electric charge.
All matter is made of ______.
Particles called atoms
What are the 3 types of variables?
Independent, dependent, controlled
What type of reaction is it when magnesium is mixed with hydrochloric acid?
Write a word equation for the reaction between magnesium and hydrochloric acid.
Magnesium + hydrochloric acid -> magnesium chloride + hydrogen gas
What charge does a sodium ion have?
+1
Particles of matter are constantly in motion. True or false?
True
Which variable do you change?
Independent
What type of reaction is it when magnesium carbonate is mixed with hydrochloric acid?
Metal-carbonate-acid reaction
Write a word equation for the reaction between magnesium carbonate and hydrochloric acid.
Magnesium carbonate + hydrochloric acid -> magnesium chloride + carbon dioxide + water
What charge does a magnesium ion have?
+2
Particles of matter repel each other. True or false?
False
Which variable do you measure?
Dependent variable
What type of reaction is it when a colourful solid forms?
Precipitation reaction
Write a word equation for the reaction between silver nitrate and sodium hydroxide.
silver nitrate + sodium hydroxide -> sodium nitrate + silver hydroxide
What charge does a chlorine ion have?
-1
They speed up
Which variable stays the same?
Controlled
What type of reaction is it when copper carbonate is heated to produce copper oxide?
Thermal decomposition
Write a word equation for the thermal decomposition of copper carbonate.
copper carbonate -> copper oxide + carbon dioxide
Write the chemical formula for calcium carbonate.
CaCO3
What can you say about the atoms that make up an element?
You conduct an experiment to test which type of shoe allows you to run 100 m the fastest. You time how long the run takes wearing joggers, sandals and thongs. What is the independent variable?
The type of shoe