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WorksheetsGATE ps-Sem. 1 Review
Total questions: 60
Worksheet time: 2hrs 44mins
Name
Class
Date
1.
What is the measurement shown with correct sig. figs?
a)
21.2 ml
b)
21 ml
c)
20.1 ml
d)
22 ml
2.
This state of matter does not have a definite size or shape.
a)
Gas
b)
Liquid
c)
Solid
d)
Milk
3.
The amount of matter something contains.
a)
volume
b)
mass
c)
density
d)
measurement
4.
Substance with a DEFINITE shape and DEFINITE volume...
a)
solid
b)
liquid
c)
gas
5.
Which particles are found in an atom's nucleus?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Both protons and neutrons
6.
Baking a cake is an example of a...
a)
Physical Change
b)
Chemical Change
7.
Define a Physical Property
a)
A property of matter not involving in its manifestation a chemical change
b)
A property in which stops a chemical reaction from occuring.
c)
A property or behavior of a substance which undergoes a chemical change or reaction.
d)
A property which makes the object smell or taste different.
8.
Define a Chemical Property
a)
A property which depends on the objects size or matter.
b)
A property of matter not involving in its manifestation a chemical change
c)
A property or behavior of a substance which undergoes a chemical change or reaction.
d)
A property which makes the object smell or taste different.
9.
Which liquid has the greatest density?
a)
lamp oil
b)
karo syrup
c)
water
d)
honey
10.
Democritus called the tiniest particles of matter "atomos", which is Greek for _____
a)
empty space
b)
invisible
c)
very small
d)
indivisible
11.
Rutherford referred to the center of the atom, where the mass was concentrated, as _____
a)
the kernel
b)
the nucleus
c)
the focus
d)
the heart
12.
For an atom, the number of electrons is equal to the number of _____
a)
protons
b)
protons plus neutrons
c)
neutrons
d)
nucleons
13.
How many neutron are in the atom "K"?
a)
7
b)
2
c)
39
d)
20
14.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
15.
What is the atomic mass of "F," Fluorine?
a)
9
b)
18
c)
17
d)
19
16.
An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?
a)
82
b)
125
c)
289
d)
207
17.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
18.
The horizontal row on the periodic table is called a
a)
group
b)
family
c)
period
d)
atomic number
19.
A vertical column is called...
a)
group
b)
tower
c)
period
d)
crew
20.
Most of the elements on the periodic table are classified as _____.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Periods
21.
Elements in a ..................have similar chemical properties.
a)
period
b)
group
c)
row
22.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
23.
The yellow atoms are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
24.
Group 18 elements are known as the _____ _____ and have full valence shells.
a)
royal gases.
b)
supreme solids.
c)
noble gases.
d)
legit liquids.
25.
Which of the following measurements contains two significant figures?
a)
0.00400 L
b)
0.00404 L
c)
0.00044 L
d)
0.00440 L
26.
How many significant figures are in the measurement 0.0034 kg?
a)
two
b)
four
c)
five
d)
This cannot be determined
27.
How many significant figures are in the measurement 40,500 mg?
a)
two
b)
three
c)
four
d)
five
28.
What is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL?
a)
5.6 x 10 1
b)
1.1 x 10 2
c)
8.8 x 10 -3
d)
8.0 x 10 1
29.
The modern periodic table is arranged in order of increasing atomic
a)
mass
b)
charge
c)
number
d)
radius
30.
Whats the empirical formula of a molecule containing 18.7% of Lithium, 16.3% of Carbon and 65.0% of oxygen?
a)
CO2Li3
b)
Li2CO3
c)
Li3CO2
d)
LiCO5
31.
Find the percent composition of hydrogen in ammonium sulfide.
a)
11.8%
b)
41.1%
c)
47.1%
32.
What is the molar mass of dihydrogen dioxide ?
a)
48 g/mol
b)
34.02 g/mol
c)
36.5 g/mol
d)
35.5 g/mol
33.
How many formula units are there in 62 g of zinc (II) phosphate?
a)
1.9 x 1026 F.U.
b)
9.6 x 1023 F.U.
c)
3.7 x 1025 F.U.
d)
3.1 x 1024 F.U.
34.
How many particles are in 1 mole of anything?
a)
6.02 x 1023
b)
22.4
c)
12
d)
2.06 x 1024
35.
What is the molar mass of aluminum sulfate?
a)
256.87 g
b)
312.5 g
c)
342.1 g
d)
412.5 g
36.
Formula for Lead (IV) carbonate
a)
Pb2C4
b)
Pb(CO3)2
c)
Pb2(CO)4
d)
PbCO3
37.
What is the name for this acid? H2CO3
a)
Carbonic acid
b)
Carbonous acid
c)
hydro carbonic acid
d)
di hydrogen carbon tri oxide
38.
Which of the following would be an ionic compound?
a)
N2O5
b)
CO2
c)
NO3
d)
MgO
39.
Which of the following would be molecular compound?
a)
MgS
b)
CuO
c)
NO
d)
NH4NO3
40.
Name the following ZnO
a)
Zinc oxide
b)
Zinc II oxide
c)
zirconium oxalate
d)
zinc oxalate
41.
What charge would tin have in the compound SnO2
a)
+2
b)
-2
c)
+4
d)
-4
42.
6.02 x 1023 is known as who's number?
a)
guacamole
b)
molar number
c)
avogadro's number
d)
Mendeleev's number
43.
Ca3N2
a)
calcium nitrogen
b)
carbon nitrogen
c)
calcium nitride
d)
carbon nitrate
44.
Potassium sulfate is written as
a)
K4SO2
b)
P2(SO4)3
c)
K2SO4
d)
P4SO3
45.
You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements. (keep two decimal places throughout calculations)
a)
SO
b)
SO2
c)
SO3
d)
SO4
46.
Find the molecular formula for a compound that contains 9.80 g of N, 22.4 g of O. The molecular molar mass = 92.0 g/mol
a)
NO
b)
NO2
c)
N3O6
d)
N2O4
47.
A piece of copper has a mass of 89g and a volume of 10 cm3. What would be the density of the copper?
a)
0.89 g/cm3
b)
89 g/cm3
c)
8.9 g/cm3
d)
890 g/cm3
48.
A block of sugar with a mass of 28.5 g that has a length of 3.5 cm and a w of 2.8 cm would have a ht. of what? D = .859 g/cm3
a)
2.7 cm
b)
4.2 cm
c)
3.4 cm
d)
3.7 cm
49.
If Uranium-235 goes through alpha decay the daughter element formed would be
a)
Uranium-239
b)
Thorium-231
c)
Neptunium-235
d)
Not enough info to determine
50.
If Thorium 232 goes through Beta decay it's daughter element formed would be?
a)
Uranium-235
b)
Protactinium-232
c)
92Pa
d)
Thorium- 233
51.
What kind of reaction is shown in the picture
a)
Endothermic
b)
Exothermic
c)
Explosive
d)
Boring
52.
All of the following reactions are correctly balanced except-
a)
A
b)
B
c)
C
d)
D
53.
Si + S8 →Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
54.
Pb(NO3)2 →PbO + NO2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
55.
Cu + 2Ag(NO3) → 2Ag + Cu(NO3)
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
56.
CH4 + 2O2 --> 2H2O + CO2
a)
Synthesis
b)
Decomposition
c)
Double displacement
d)
Combustion
57.
Predict the Products:
Mg + O2 -->
Mg + O2 -->
a)
MgO
b)
MgO2
c)
Mg2O2
d)
Mg2O
58.
Predict the Products:
C4H6 + O2 -->
C4H6 + O2 -->
a)
CO2 + H2O
b)
CO2
c)
H2O
d)
CO + H2O
59.
Predict the Products:
MgCl2 + AgNO3 -->
MgCl2 + AgNO3 -->
a)
Mg(NO3)2 + AgCl
b)
MgAg + ClNO3
c)
Mg + Cl + Ag + NO3
60.
Balance this reaction: ____ RbNO3 + ____ BeF2 ----> ____ Be(NO3)2 + ____ RbF
a)
1,1,1,1
b)
1,2,1,1
c)
2,1,1,2
d)
2,1,2,1
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