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WorksheetsChemistry semester one review
Total questions: 30
Worksheet time: 21mins
Name
Class
Date
1.
The SI base unit of length is the
a)
gram
b)
foot
c)
yard
d)
meter
2.
A description of how close a measurement is to its true value
a)
accuracy
b)
precision
c)
significant figures
d)
explanation
3.
Calculate the density of a substance with a volume of 5.0 mL and a mass of 45.3 g.
a)
0.110 g/mL
b)
9.06 g/mL
c)
226 g/mL
d)
15.0 g/mL
4.
Ions that are formed from one atom are known as
a)
polyatomic ions.
b)
monatomic ions.
c)
cations.
d)
anions.
5.
An atom's ability to undergo chemical reactions is determined by its
a)
protons.
b)
innermost electrons.
c)
neutrons.
d)
outermost electrons.
6.
Aluminum has _ valence electrons.
a)
7
b)
1
c)
6
d)
3
7.
In an experiment the numerical data is known as
a)
quantitive data
b)
qualitative data
8.
The information in an experiment that describes color, odor, or shape is known as
a)
quantitative data
b)
qualitative data
9.
A negative ion is called
a)
cation
b)
anion
c)
cathode
d)
electro
10.
The SI base unit of mass is the
a)
kilogram
b)
pound
c)
ounce
d)
meter
11.
Postive ions are called
a)
anions
b)
positrons
c)
alpha
d)
cations
12.
A description of how close measurements are to each other is
a)
accuracy
b)
closeness
c)
precision
d)
target location
13.
When naming an ionic compound, you
a)
name the non-metal first
b)
use prefixes to show the number of atoms
c)
name the cation (metal) first
d)
there is no set rule
14.
The "s" orbital can hold
a)
2 electrons
b)
4 electrons
c)
6 electrons
d)
10 electrons
15.
The formula for copper (I) chloride is
a)
CoCl2
b)
CoCl
c)
CuCl
d)
CuCl2
16.
An atom has 12 protons, 12 electrons and 14 neutrons. What is the mass number?
a)
12
b)
24
c)
26
d)
38
17.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
18.
What is the basis of a metallic bond?
a)
the attraction of neutral metal atoms.
b)
the attraction between protons and neutrons.
c)
the attraction between positive metal ions and interlocking electrons.
d)
the attraction between positive metal ions and free floating electrons.
19.
The idea of arranging the elements in a table according to their chemical elements and physical properties is attributed to...
a)
Newlands
b)
Moseley
c)
Bohr
d)
Ramsey
20.
Mendeleev arranged the periodic table by...?
a)
color
b)
increasing atomic mass
c)
increasing atomic number
d)
density
21.
Rick wants to test two shower cleaners to see which one leaves his shower the cleanest. How would he establish a control?
a)
only use one cleaner
b)
leave one portion of the shower unwashed
c)
calculate how long it takes to wash a shower
d)
start with only clean showers
22.
What does it mean when an element is happy?
a)
They have 8 protons
b)
They have 8 valence electrons (a full octet)
c)
They have 8 protons
d)
They have 8 neutrons
23.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
24.
Scientist who first came up with the idea and term "atom".
a)
Dalton
b)
Bohr
c)
Einstein
d)
Democritus
25.
In the picture shown, element x is likely __________.
a)
Carbon
b)
Oxygen
c)
Nitrogen
d)
Fluorine
26.
What is the FORMULA for
magnesium carbonate
magnesium carbonate
a)
Mg(CO3)2
b)
MgHCO3
c)
MgCO2
d)
MgCO3
27.
The electrons in a metallic bond are found where?
a)
right next to the nucleus
b)
in the "sea of electrons"
c)
at the neighboring atoms nucleus
d)
they escape in order to bond
28.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
29.
States that it is not possible to know precisely both the velocity and the position of a particle at the same time.
a)
Hund's rule
b)
Pauli exclusion principle
c)
Heisenberg uncertainty principle
d)
Aufbau principle
30.
A particle of electromagnetic radiation with no mass that carries a quantum of energy.
a)
quantum
b)
valence electron
c)
photon
d)
atomic orbital
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