Shared Flashcard Set

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Revision
classifying materials
42
Science
9th Grade
04/26/2009

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Cards

Term
What are the three states of matter?
Definition
Solid, liquid and gas.
Term
What are the particles like in a solid?
Definition
They are held tightly together.
Term
What are the particles like in a liquid?
Definition
They are close together but they can move.
Term
What are the particles like in a gas?
Definition
They are far apart and can move around freely.
Term
list all five changes of state
Definition
melting, boiling, freezing, condensing and subliming.
Term
To change a solid to a liquid, what process does it go through?
Definition
Melting.
Term
To change a liquid to a gas what process does it go through?
Definition
Boiling.
Term
To change a gas to a solid what process does it go through?
Definition
Subliming, which is the rarest change of state.
Term
To change a liquid to a solid, what process does it go through?
Definition
freezing.
Term
To change a solid to a gas, which process does it go through?
Definition
Subliming.
Term
To change a gas to a liquid, what prcess does it go through?
Definition
Condensing.
Term
What happens to the pressure of a gas if the temperature of the gas is increased?
Definition
The pressure increases.
Term
what happens to the pressure of a gas if the volume of a gas is decreased?
Definition
The pressure is increased.
Term
What is diffusion?
Definition
It is when the particles spread out.
Term
What can't a element do?
Definition
It cannnot be split up into anything smipler than itself.
Term
What is an atom?
Definition
An atom is the smallest stable part of an element.
Term
What do compounds contain?
Definition
Two or more elements joined up.
Term
What are particles in a compound called?
Definition
Molecules.
Term
When elements make a compound, What is the join also known as?
Definition
The chemical bond.
Term
How do elements combine together?
Definition
In a chemical reaction.
Term
How many elements are there in the periodic table?
Definition
100.
Term
Gives the names of all the groups in the periodic table.
Definition
reactive metals, transition elements, other metals, non metals and Noble gases.
Term
What is the symbol for iron?
Definition
Fe
Term
What is the symbol for magnesuium?
Definition
Mg
Term
what is the symbol for potassium?
Definition
K
Term
What is the symbol for sodium?
Definition
Na
Term
what is the symbol for lithium?
Definition
Li
Term
What would the symbol be if you added two hydrogen atoms together?
Definition
H2
Term
What techniques can you use to seperate mixtures?
Definition
Filtration, evapouration, chromatography and distilation.
Term
What is an atom?
Definition
It is the smallest stable part of an element.
Term
what is a compound?
Definition
It is two or more elements joined up.
Term
How is a compound different from a mixture?
Definition
Compounds are chemically joined up and mixtures are not.
Term
What ending do you get when two elements combine?
Definition
'ide'
Term
what is the ending when three or more different elements combine?
Definition
'ate'
Term
What ending do you get when two identical elements combine?
Definition
The name doesnt change at all
Term
List five properties of metals.
Definition
1= Metals conduct electricity.
2= Metals conduct heat
3= Metals have high densities.
4= Metals have high melting and boiling points.
5= Metals make oxides when reacted with oxygen.
Term
List 5 properties of non-metals.
Definition
1= Non-metals are poor conductors of electricity
2= They are poor conductors of heat.
3= They are not strong or hard wearing.
4= They have low densities.
5= They have low melting and boiling points.
Term
What is diamond?
Definition
It is a non-metal but is very hard.
Term
What is mercury?
Definition
Mercury is a non-metal but it comducts electricity.
Term
What is Graphite?
Definition
Graphita is a non-emtal but conducts electricity.
Term
What do you get if you add sodium and Chlorine?
Definition
You get Sodium Chloride.
Term
What do you get if you add Magnesium and Oxygen?
Definition
You get Magnesium Oxide.
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