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Chemistry Review Flashcards | StudBud
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Chemistry Review
Chemistry Review
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1
Sodium and calcium are examples of a(n)...
Mixture
Compound
Molecule
Element
2
A substance made of the same type of atom
Element
Compound
Molecule
Mixture
3
Which molecule makes up most of the mixture of air?
Carbon dioxide
Water vapor
Nitrogen
Oxygen
4
What does the "12.011" represent?
Element name
Atomic number
Chemical symbol
Atomic mass
5
What does the "6" represent?
Element name
Chemical symbol
Atomic number
Atomic mass
6
Air is a mixture of what atoms and molecules?
oxygen, nitrogen, ammonia, water, argon
water, carbon dioxide, helium, oxygen
oxygen, nitrogen, water, carbon dioxide, argon
carbon monoxide, nitrogen, argon, water, oxygen
7
How many elements are on the periodic table?
224
118
89
61
8
The building block of all chemistry that is made of protons, neutrons and electrons.
Mixture
Molecule
Atom
Compound
9
Scientists have made discoveries of new elements over the past many years
True
False
10
How do odors travel through the air?
stick to air molecules
travel as molecules not connected to air molecules
11
How do odors travel to your nose?
odors travel in a straight line and in all directions
odors travel in a straight line like a magnet from the source to our nose
12
A type of particle that is created when two or more atoms chemically combine
Element
Isotope
Molecule
Mixture
13
When more than one type of molecule come together but do not chemically combine
Compression
Mixture
Element
Molecule
14
Why do brownies baking in the oven have a stronger smell than a box of brownie mix?
heat is added and it moves the molecules down to the floor
heat is added and it moves the molecules faster through the air
heat is taken away and it moves the molecules faster through the air
heat is taken away and it moves the molecules further apart
15
What does the "C" represent?
Atomic mass
Chemical symbol
Atomic number
Element name
16
Water and carbon dioxide are examples of a(n)...
Mixture
Molecule
Atom
Element
17
Air and saltwater are examples of a(n)...
Compound
Atom
Mixture
Element
