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What is the Matter?
My Friend, the atom
Elementary
Acids and Compounds and bases Oh, My!
Don't over react!
100
Matter is made up of these.
What is an atom?
100
The smallest unit of a pure substance that still has the properties of that substance.
What is an atom?
100
A pure substance that is made of only on kind of atom.
What is an element?
100
The substance formed from the atoms of two or more elements.
What is a compound?
100
The change of colour, production of a gas, production of light, the formation of a new substance, production of heat.
What are the signs of a chemical reaction?
200
Atoms bond together to form these larger units.
What are molecules?
200
The centre of an atom.
What is the nucleus?
200
An element that conducts heat and electricity well.
What is a metal?
200
A compound that reacts with metals to produce hydrogen and turns blue litmus paper red.
What is an acid?
200
The breaking down of a substance into smaller compounds.
What is decomposition?
300
Matter exists in these 4 states.
What are solids, liquids, plasma and gases?
300
Every atom's nucleus contains at least one of these.
What is a proton?
300
All atoms of the same element have this in common.
What is the same number of protons?
300
The strength of acids and bases are measured by this.
What is the pH scale?
300
The slow reaction between a substance and oxygen to form an oxide.
What is corrosion?
400
Two different ways that matter can change.
What is a physical or chemical change?
400
A negatively charged subatomic particle.
What is an electron?
400
Used to describe the method of organizing elements by their atomic number.
What is the periodic table?
400
Equal strength acids and bases do this to each other.
What is neutralise?
400
The substances produced when an acid and carbonate react.
What are water, carbon dioxide and a salt?
500
The ability of a substance to react chemically.
What is reactivity?
500
The number of protons in an atom.
What is the atomic number?
500
The number of electrons that are in each of the shells of an atom of calcium.
What is 2,8,8,2?
500
A chemical reaction in which an insoluble solid is formed.
What is precipitation?
500
A representation showing equal number of atoms before the reaction and after the reaction.
What is a balanced equation?