Vocab
Classifying + Vocab
Chemistry
Density
Super Scary Hard Questions
100
The smallest unit of an element/the building block of an element--
an atom
100
The science that studies matter and how it changes is called…?
chemistry
100
The chemical formula for water, H2O, means that each water molecule has how many hydrogen and oxygen?
2 hydrogens, and 1 oxygen
100
What is the equation used to solve for density?
D = mass/volume
100
The ability of a substance to react with oxygen and burn is known as…?
flammability
200
A substance that cannot be broken down into simple substances is?
element
200
The smallest unit/building block of a compound is the ...?
molecule
200
How many letters do we usually use as the symbol for each element?
1 or 2
200
What is a unit for Density
g/mL g/cm^3 ...
200
The temperature and pressure at which a solid becomes a liquid is its...
melting point
300
Color and shape are examples of which type of property?
physical properties
300
If a mixture is the same throughout and doesn’t show any differences, what do we call it?
homogeneous
300
When ice melts it is undergoing what type of change?
physical change/change of phase
300
What is the density of a sample of liquid with a volume of 100 cm^3 and a mass of 200 grams?
2 g/cm^3
300
The temperature and pressure at which a liquid becomes a gas is its…
boiling point
400
Rust forming on metal is an example of which type of change?
Chemical Change
400
If the mixture shows clear differences and is not uniform throughout, we call it…?
heterogeneous
400
True or False – you can separate out a compound into parts?
False
400
What is the density of a 26 gram rock with a volume of 3 cm^3?
8.67 g/cm^3
400
True of False - Helium is used to fill balloons because its density is greater than the density of air.
False
500
The physical form in which a substance exits, ( solid, liquid, or gas) is called its…
state
500
Which of the following substances is a compound: air, carbon dioxide, nitrogen, oxygen.
carbon dioxide
500
How many atoms are in a molecule of indigo with the formula C16H10N2O2?
30
500
If the density of a substance is known to be 4.1 g/ml and it has a volume of 5 ml, what is its mass?
20.5 g
500
What is the name of Mr. DiStefano's advisory?
The Golden Chords
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