Matter
Measuring Matter
Atoms
Elements
Misc.
100
Matter is what?
Anything that has mass and takes up space.
100
Volume is equal to?
Length X Width X Height
100
Electrons are?
Negatively charged
100
True / False Golds density is greater than dirt and sand?
True
100
Give an example of a compound found in everyday life.
H2O CO2 H2 O2 etc.
200
The boiling point is?
The temperature at which liquids boil.
200
Density is?
The amount of matter in a given volume. OR Mass/Volume
200
The nucleus is made of?
Protons & Neutrons
200
You would use Dredging to find what element?
Gold
200
True / False You can change your mass, but not your weight.
False
300
Mixtures are?
Two or more substances that are in the same place, but not chemically combined.
300
Buoyancy is?
When something floats.
300
Who first devolved the idea of atoms? Hint: in 460 BC
Democritus
300
Electrolysis means?
Electric cutting
300
On the periodic table groups go a. Up or Down b. Across from side to side
A. up and down
400
Physical changes are?
Changes that alter the form of the substance, but not its identity.
400
How can you measure the volume of an irregular solid?
Water displacement
400
The electron travels in the?
Electron Cloud
400
Iron is usually found as an ______ or a _________?
Ore or a compound
400
The two metal strips in electrolysis are called?
Electrodes
500
What properties never change and can be used to identify unknown matter?
Characteristic properties
500
What objects would float in water? 1) Mass-45g Volume-45cm3 2) Mass-60g Volume-66cm3 3) Mass-55g Volume 40cm3 4) Mass-20g Volume 30cm3
2 & 4
500
The Atomic mass - the atomic number gives the number of what?
Number of neutrons
500
To obtain copper from it's compound it is necessary to cause a what?
Chemical Reaction
500
Describe how to change 1) From a solid to a liquid and then to a gas 2) From a liquid to a solid and then to a gas
1) Melt the solid then boil the gas 2) Freeze the liquid and then let sublimation occur
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