All that Matters
Molecules
Solids, Liquids, Gases
Density and Volume
Basic Chemistry
100
Define Matter
Anything that has mass and takes up space.
100
What is the formula for water?
H2O
100
How does a solid change to a liquid?
By melting
100
What is the formula for density and for volume?
Density: Mass/Volume Volume:Length * width * height
100
How many electrons are in a Hydrogen atom?
One
200
What is a Chemical Change?
A characteristic of a substance that describes its ability to change into different substances.
200
What is the formula Hydrogen peroxide?
H2O2
200
What is the formula for pressure?
Force/Area
200
What is the density of vegetable oil?
0.91g per milliliter
200
How many neutrons are in a Hydrogen atom?
None
300
Define flexible, and name 3 flexible objects
The ability to bend into objects. 1. play-doh 2. rubber bands 3. fruit roll-ups
300
what is the formula for Methane?
CH4
300
What is the Melting Point?
It is when melting occurs at a specific point.
300
Would honey float or sink in water? why or why not?
Yes it would, due to the density being higher than water.
300
What is the number of iron on the periodic table?
26
400
What is a chemical bond?
An attraction between atoms that allows the formation of chemical substances that contains two or more atoms.
400
What is the formula for Ozone?
O3
400
Why do hot gas particles move faster than the cold gas particles?
They move faster because when the temperature rises, the gas particles act like humans ; They try to get away from the heat.
400
If Charcoal has a mass of 9.94g and a volume of 10.03, then what is the density? (Round to the nearest hundredth)
0.99
400
what is the chemical formula for Hexane?
C6 H14
500
What are Homogeneous mixtures?
A mixture where all substances are evenly mixed, so you cannot see a different parts.
500
What is the formula for Propane?
CH3 CH2 CH3
500
Define Solids, liquids, and Gases and 2 give an examples of each.
Solids: have definite shape and volume (ice cubes, popcorn Liquid: have definite volume, but no shape of its own(mouthwash, oil) Gas: has no definite shape or volume (helium, nitrogen)
500
The density for gold is 19.3g per centimeter (cubed). Out of the 5 following rocks, which one is real gold? Rock A:Mass: 108g, volume: 12cm Rock B:Mass: 126g, volume: 15cm Rock C:Mass: 394g, volume: 21cm Rock D:Mass: 386g, volume: 20cm Rock E:Mass: 378g, volume: 45cm
Rock D
500
What is the law of conservation of Mass?
Energy cannot be created nor destroyed. It can only be transferred from state to state
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