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FS Standard 4 Review
Test Description: Standard 4 concepts
Instructions: Answer all questions to get your test result.
1) The smallest subatomic particle is a(n)..
A
neutron
B
proton
C
atom
D
electron
2) An example of a solute(something that dissolves)is...
A
all of these
B
sugar
C
water
D
steam
3) A physical change..
A
is changing from one state of matter to another
B
all of these
C
involves changing the molecular structure of things
D
is always permanent
4) the chemical symbol for potassium is..
A
K
B
Po
C
Fe
D
P
5) The 2 in CO2 means ___ are present.
A
2 molecules of carbon
B
2 oxygen atoms
C
2 elements of cobalt
D
2 carbon dioxide atoms
6) An atomic mass unit equals..
A
the mass of an electron
B
the number of protons in the nucleus of each atom
C
the sum of the masses of protons and neutrons in an atom
D
the mass of one proton or neutron
7) What is an example of a reversible physical change?
A
change in odor
B
chopping
C
rusting
D
phase change
8) Which is an example of a chemical change occurring during food storage?
A
potatoes sprouting
B
crackers staling
C
honey sugaring
D
brown sugar hardening
9) In food preparation, an example of a physical change is..
A
toasting bread
B
grilling meat
C
freezing juice in popsicle containers
D
baking a cake
10) Chewing food would be an example of a..
A
neither physical or chemical
B
physical change
C
both physical and chemical change
D
chemical change
11) Covalent bonds are formed when..
A
two atoms, usually nonmetals, share an electron
B
an electron is transferred
C
you add glue to atoms
D
opposite charges attract atoms to each other
12) Which one involves a chemical change?
A
combining baking soda and vinegar
B
tossing a salad
C
sweetening ice tea
D
combining salt and water
13) The number of electrons in the first shell(or orbital) that makes an atom happy and chemically stable is..
A
8
B
1
C
2
D
4
14) The number of electrons in the second shell(or orbital) that makes an atom happy and chemically stable is...
A
1
B
4
C
8
D
2
15) An example of an element is ..
A
sugar
B
water
C
iron
D
air
16) An example of a compound is..
A
sodium
B
salt
C
salt water
D
soft drinks
17) An example of a heterogenous mixture is
A
tossed salad
B
salt
C
cola
D
iced tea
18) An example of a homogenous mixture is..
A
veggie soup
B
tossed salad
C
cola
D
italian dressing
19) So the atomic number of Carbon is 6 and the atomic mass is 12.011. How many protons and electrons does Carbon have?
A
1
B
12
C
18
D
6
*select an answer for all questions
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