Chemistry

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What is a compound?
A compound is a substance that contains two or more elements that are chemically combined.
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What is an ion?
An ion is a charged particle formed when an atom,or a group of atoms gains or loses electrons.
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What is an atom?
The smallest part of an element that can exist.
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What is a chemical reaction?
A change where atoms are rearranged or have joined together to make a new substance.
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What is mass?
The amount of matter an object has.
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What is a precipitation reaction?
A reaction in which a insoluble solid is formed when specific solutions are mixed.
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What does soluble mean?
Able to dissolve in a solvent.
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What does a word equation represent?
It represents a chemical reaction.
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What is the law of conversation mass?
That no atoms are lost during a chemical reaction and the total mass is equal.
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What are the three states of matter?
Solid,Liquid and Gas
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What does sublime mean?
Able to change from a solid to a gas and gas to solid without turning into a liquid.
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What is an ionic compound?
A giant structure of atoms.
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What do metal atoms lose?
They lose electrons.
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What are ionic lattices held together by?
They are held together by electrostatic forces.
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What is an electron?
An subatomic particle with a negative charge.
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What is a covalent bond?
It is a bond formed when two atoms share electrons.
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What is an element?
A element is a substance made of only one atom.
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What are weak intermolecular forces?
They are forces which have weak attractive forces between molecules.
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What is a non-metal?
It is a poor conductor of electricity and heat.
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What do dot and cross diagrams show?
They show how electrons are shared in covalent bonds.
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What does small molecules have?
A strong covalent bond.
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What do large molecules have?
A weak covalent bond.
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What are boiling and melting points an example of?
They are an example of changing state.
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What does a substance that can conduct electricity have?
They have charged particles which move around.
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What do metals consist of?
They have a giant structure of atoms.
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What is an alloy a mixture of?
It is a mixture of two or more alloys.
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What is a conductor?
It is a material which allows charge to flow easily through it.
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Name 3 greenhouse gases.
Water vapour,methane and carbon dioxide.
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Name one thing that greenhouse gases do?
They absorb heat radiation.
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What do farming cattle release a lot of?
Methane (cows fart quite a lot)
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What do burning fossil fuels release a lot of?
Carbon dioxide
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What does acid rain consist of?
Sulphur dioxide and nitrogen.
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What is a carbon footprint?
It is a measure of how much carbon is used in certain activities.
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Other cards in this set

Card 2

Front

What is an ion?

Back

An ion is a charged particle formed when an atom,or a group of atoms gains or loses electrons.

Card 3

Front

What is an atom?

Back

Preview of the front of card 3

Card 4

Front

What is a chemical reaction?

Back

Preview of the front of card 4

Card 5

Front

What is mass?

Back

Preview of the front of card 5
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