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Chemistry Review Flashcards | StudBud

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Chemistry Review

13 terms·StudBud Administration·45 plays

#chemistry#atoms#elements#water

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Questions 13

Answers

1
Which heading best replaces the letter B?
mixtures
elements
compounds
atoms
2
Which is the correct structure of a water molecule?
B
A
C
D
3
Water is the only compound on Earth that---
is denser as a solid than as a liquid
commonly exists in all 3 states of matter
doesn't dissolve other substances
contracts when it freezes
4
The equation shows what type of change?
mechanical change
no change
chemical change
physical change
5
What property of water allows skin to cool down when it's hot?
universal solvent
evaporation
adhesion
capillary action
6
What does the subscript next to the C indicate?
the number of carbon atoms bonded to hydrogen per molecule
the number of oxygen atoms bonded to carbon per molecule
the number of caffeine molecules bonded together
the number of carbon atoms in each caffeine molecule
7
What is in every element?
many different atoms
many of the same atoms
many elements
many molecules
8
The Au in this block from the periodic table is the symbol for
name of the element
the name of the electron
atomic mass of the element
protons of the element
9
Which element is in all living things?
sodium
helium
copper
carbon
10
What has happened to the aluminum and oxygen?
They combined physically to form a new mixture.
They combined chemically to form a new compound.
They combined chemically to form oxygen & aluminum.
They combined physically to form a new element.
11
Which element could be added to each column?
hydrogen
carbon
chlorine
sodium
12
Which correctly labels 1,2,3, & 4?
1-nucleus, 2-proton, 3-neutron, 4-electron
1-electron, 2-proton, 3-nucleus, 4-neutron
1-neutron, 2-electron, 3-proton, 4-nucleus
1-proton, 2-electron, 3-neutron, 4-nucleus
13
Where is most of the Earth's water located?
oceans
rivers
Glaciers
lakes