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GCHM 100 WEEK 2 S2025 Flashcards | StudBud
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GCHM 100 WEEK 2 S2025
GCHM 100 WEEK 2 S2025
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Answers
1
Compouds conatin two or more elements in a...
differing ratios
Fixed ratio
ratio does not matter
any ratio
2
What are the two classes of matter?
pure substances
mixtures
elements
homogenous
3
What about hardness?
chemical property?
physical property
4
Homogenous mixtures have ------ composition
non uniform
Uniform
5
What is Chemistry?
The study of matter
The study of atoms
The study of life
The study of science
6
Is boiling a physical or chemical change?
chemical change
physical change
7
Flammability?
chemical property?
physical property
8
What about freezing?
physical change
chemical change
9
Liquids have
strong attractions between particles
particles that move slow
indefinite shape
particles that are close to eachother
definite volume
definite shape
10
Pure substances are either ...
heterogenous
homogenous
compounds
elements
11
What is are examples of a homogenous mixture?
salt and pepper
stainless steel
oil and water
saline (salt+water)
12
Mixtures are either...
Homogenous
Heterogenous
elements
coumpounds
13
Heterogenous mixtures have ------ composition
non uniform
Uniform
14
Gases
have very weak attractions between particles
particles are far apart
are compressable
have indefinite volume
particles move very fast
have indefinite shape
15
What about if the shape is indefinite but the volume is definite, what state is it in?
Liquid
Gas
Solid
16
What are the three states of matter?
Gas
Solid
Liquid
Fluffy
17
What is are examples of a heterogenous mixture?
salt and pepper
oil and water
saline (salt+water)
stainless steel
18
CO
2
and CO are the same compound
False
True
19
What about decay?
physical change
chemical change
20
Is H
2
O and element or a compoud?
element
compound
21
What is matter?
Anything that has volume
Anything that has mass
Anything that takes up space
22
Solids have
definite shape
indefinite shape
fixed particle arragement
definite volume
very strong attractions between particles
particles that move very slow
23
What about burning?
chemical change
physical change
24
Is colour a physical or chemical property?
chemical property?
physical property
25
Is O
2
an element or compound?
element
compound
26
What if it is compressible and the attraction between particles is very weak, what state is it in?
Gas
Liquid
Solid
27
If water has a definite shape and definite volume, what state is it in?
Gas
Liquid
Solid
