Matter
Theory or Law
Elements
Compounds
Chemical Reactions
100
Particles at higher temperatures move _______ than particles at lower temperatures.
Faster
100
This law says that the mass of the reactants is equal to the mass of the product.
Law of Conservation of Mass
100
Ag represents this element
Silver
100
Two or more elements bonded together is called a..
Compound
100
The substances that go into a chemical reaction are called...
Reactants
200
A mixture where you can see the different parts.
Heterogenous mixture
200
Compounds always contain the same fixed ratio. What is the ratio and elements for water?
2 hydrogen, 1 oxygen
200
What determines an element's atomic number?
How many protons one atom of that element contains.
200
NH4OH contains how many hydrogen atoms?
5
200
What is the product in the following:
Silver + bromine 🡪 silver bromide
Silver bromide
300
Boiling salt water to remove the water is what type of change?
Physical change
300
4g C + 3g O2 = ___?___ CO2
7g
300
What are the three subatomic particles that make up an atom?
Proton, Neutron, Electron
300
An what type of elements make ionic compounds?
metal and non-metal
300
A reaction where energy is released is called
Exothermic
400
Say a substance reacts with oxygen. What type of property is this?
Chemical property
400
Two or more atoms bonded together is called a...
Molecule
400
This group is found along the "staircase" of the periodic table.
Metalloids
400
What is the formula for magnesium oxide?
MgO
400
A ……. causes a reaction to speed up.
Catalyst
500
What does this WHIMS Symbol indicate?
Harmful/ Irritant
500
The atomic model that is drawn with separate levels or shells was developed by...
Bohr
500
This group of elements are known to be the most reactive.
Alkali metals
500
Sulphur tetraoxide contains how many oxygen atoms?
4
500
Corrosion and combustion both use this element as a reactant.
Oxygen