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WorksheetsChemistry Semester 1 Review
Total questions: 29
Worksheet time: 25mins
Name
Class
Date
1.
How many Joules of energy are required to change 10 gram of water from 20 C to 90 C?
a)
1400 J
b)
2800 J
c)
210,000 J
d)
1,400,000 J
2.
The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius is ________
a)
Heat energy
b)
Specific heat
c)
convection
d)
thermal energy
3.
What is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mC∆t
b)
Q=mC
c)
Q= ½mv
d)
m=QC
4.
In an endothermic reaction, heat is __________
a)
taken in
b)
given out
5.
The particles that make up an atom are _.
a)
Electrons, protons, and nuclei
b)
Elements, protons, and electrons
c)
Protons, neutrons, and nuclei
d)
Proteons,nutrons, and electrons
6.
What are the positively charged particles in an atom called?
a)
Protons
b)
Neutrons
c)
Electrons
d)
Nucleus
7.
How many protons does Helium have?
a)
4
b)
4.0026
c)
2
d)
1
8.
Evaporation is ___________?
a)
Endothermic
b)
Exothermic
9.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
10.
Which scientist saw the atom as mostly empty space with electrons orbiting around the nucleus?
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
11.
In what section would Transition Metals be found?
a)
yellow
b)
blue
c)
pink
d)
purple
12.
The atomic number tells you what?
a)
number of nucleus
b)
number of protons
c)
number of neutrons
13.
Nonmetals are located in what section of this periodic table?
a)
Blue
b)
Yellow
c)
Pink
14.
How many valence electrons does sodium (Na) have?
a)
1
b)
2
c)
11
d)
23
15.
What element in period 2 has 7 valence electrons?
a)
Beryllium
b)
Chlorine
c)
Magnesium
d)
Fluorine
16.
How is helium different from the other noble gases?
a)
It will react with other elements.
b)
It has 10 valence electrons.
c)
It has 2 valence electrons.
d)
It is heavier than the other noble gases.
17.
If an element gains 2 electrons, what charge will it have when it becomes an ion?
a)
+2
b)
-2
c)
-6
d)
-6
18.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
19.
Which of the following will have a larger radius than Zinc?
a)
Gallium
b)
Aluminum
c)
Magnesium
d)
Strontium
20.
Which of the following will have a lower ionization energy than Scandium (Sc)?
a)
Helium (He)
b)
Titanium (Ti)
c)
Calcium (Ca)
d)
Magnesium (Mg)
21.
Ionization energy is...
a)
the energy required to add an electron to a specific atom
b)
how much energy it takes to remove an electron from an atom
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
22.
Atomic radius generally increases as we move __________.
a)
down a group and from right to left across a period
b)
up a group and from left to right across a period
c)
down a group and from left to right across a period
d)
up a group and from right to left across a period
23.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a)
decreases, increases
b)
increases, increases
c)
increases, decreases
d)
stays the same, increases
24.
Name group 2 on the periodic table.
a)
alkali metals
b)
alkaline earth metals
c)
noble gases
d)
transition metals
25.
What is the formula for Hydroxide?
a)
MnO4-
b)
OH-
c)
NH4+
d)
PO33-
26.
What will be the formula of the following chemical compound name?
Magnesium Iodide
Magnesium Iodide
a)
MgI2
b)
2MgI
c)
Mg2I2
d)
Mg2I
27.
Ca+2 + Br-
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
28.
MgF2
a)
magnesium fluoride
b)
manganese Phosphide
c)
magnesium(III) fluoride
d)
magnesium fluoride(II)
29.
Cations are
a)
positive
b)
negative
c)
neutral
d)
nonmetals
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