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WorksheetsICP Semester 1 Review
Total questions: 24
Worksheet time: 6hrs 0mins
What is NOT a sign of a chemical change?
Color Changing
Giving off light and/or heat
Formation of a Precipitate
Formation of a Solid
Formation of a Diatomic
What is the Acronym for all the Diatomic atoms?
BrINClHOF
BrKIOAgHZn
BrLiNCIOHF
ArOFHI
____ Na + ____ Cl2 → ____NaCl
(Only Insert the #s- Cl is a subscript of 2)
(PS: If there's a 0, just put in 1
(a)
Balance the following equation:
___ SeCl6+ ___ O2→___ SeO2+____Cl2
1, 1, 1, 3
2, 1, 2, 1
1, 2, 1, 2
2, 2, 2, 4
How many Oxygen atoms do I have in the following compound?
2(NH4)3PO4
4
6
8
24
____Na2SO4 + ____AlCl3 → ____NaCl + ____Al2(SO4)3
● Hint: if you see the same polyatomic ion on both sides, you can balance it as
a clump instead of individual atoms. Try this with the sulfate (SO4).
(a)
What do Reactants need to do to actually react together?
Merge Together
Collide
Burst and Spread Out
What are factors that can DECREASE a reaction rate
Heat
More Surface area
Using a
Catalyst
Stirring
Less speed
What is the molar mass of N2 (in g/mol)? Round to the hundredths place (2 decimals)
(a)
What is the percentage composition of CO?
43% C, 57% O
50% C, 50% O
25% C, 75% O
12% C, 88% O
The molar mass of CS2 is 76.15 g/mol. How many grams of CS2 are present in 10.00 mol? (If you didn't get any of these, you either forgot to round or maybe messed up with a number. If so, pick whatever's closest to your answer)
7.614 g
10.00 g
0.13 g
761.5 g
What's the molar mass of CH3COOH (Pick whatever's closest to what you get if it isn't exactly any of these)
60.151
18.906
84.62
198.07
What is a compound?
The parts of a element.
A heterogenius mixture.
Two or more elements joined by physical bonds.
Two or more elements joined by chemical bonds.
A mixture that contains more than one type of matter and is not the same throughout is a heterogeneous mixture
True
False
Which of the following is a homogeneous Mixture?
Cereal in milk
Soil
Air
Blood
What are two the two types of mixtures?
elements
compounds
heterogenous
homogenous
A pure substances ________ be broken down into simpler matter using physical methods.
sometimes
can
can not
The formation of a solid when two liquids combine is called?
Solidification
Freezing
Precipitate
Solubility
The difference between a Physical change and a Chemical change is…
Physical change is only a change to the outside appearance.
Chemical change is when matter is changed into something new.
Atoms are rearranged in chemical changes & not in physical.
All are correct.
What are the least reactive of these options
Noble Gases
Halogens
Rare Earth Metals
Alkali Metals
Transition Metals
