Classification and Properties of Matter
Ionic Compounds
Molecular Compounds
Balancing Chemical Equations
Acids and Bases
100
What is matter?
Anything that has mass and takes up space
100
What is the name of the compound Li2O
Lithium Oxide
100
What are molecular compounds made of?
Non-metals
100
What do we use to balance chemical equations?
Coefficients
100
What was the earliest use of bases made for?
Soap
200
What can matter be classified as?
A pure substance or a mixture.
200
What is the formula for calcium fluoride?
CaF2
200
If there is only one atom of the first element you write mono in front of it
a) True b) False
200
Why do we need to balance chemical equations?
Because we need to have an equal number of atoms on both sides of the arrow (-->)
200
What are the two different types of bases?
Weak and Strong
300
What does a chemical property describe?
The ability of a substance to react with another substance and form one or more new substances.
300
Why are ionic compounds formed?
This is because a positively charged metal ion is attracted to a negatively charged non-metal ion.
300
What are the numerical prefixes used with molecular compounds?
1- mono 2- di 3- tri 4-tetra 5-penta 6-hexa 7- hepta 8- oxa
300
How do you balance chemical equations?
1. write the word equation for the reaction 2. write the skeleton equation 3. count the number of atoms 4. insert coefficients
300
When are hydrogen ions released?
When acids dissolve in water.
400
What does a physical property describe?
A characteristic of a substance that you can observe and measure without changing the substance's appearance
400
What are the properties of an ionic compound?
1. Solid at room temperature 2. Very high melting point 3. Conduct electricity when melted/dissolved in water
400
What are the diatomic molecules?
hydrogen, nitrogen, fluorine, chlorine, bromine, iodine, oxygen
400
What is the Law of Conservation of Mass?
mass of the products = mass of the reactants
400
What acids are used in our everyday lives?
Sulphuric acid and sulphurous acid
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