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Unit 3/4 Review
Test Description: 8th Science
Instructions: Answer all questions to get your test result.
1) Which of the following is not found in the nucleus?
A
Atomic mass
B
Electrons
C
Neutrons
D
Protons
2) Inside the nucleus, what is the atomic number represented?
A
Neutrons
B
Electron cloud
C
Protons
D
Electrons
3) What would help when finding the charge of an atom's nucleus?
A
Mass number
B
The symbol
C
Chemical Reactivity
D
Physical properties
4) What subatomic particle SURROUNDS the nucleus?
A
Electrons
B
All of the above
C
Protons
D
Neutrons
5) Which is the best representation of electrical charges?
A
+Protons, +Neutrons, +Electrons
B
+Protons, 0 Neutrons, -Electrons
C
-Protons, 0 Neutrons, -Electrons
D
+Protons, +Neutrons, -Electrons
6) What is the best way to identify a Beryllium atom?
A
Has no mass
B
Has no nucleus
C
Has 4 protons
D
Mass is 1/2000 amu
7) The most reactive metal would be the one...
A
with 7 valence electrons
B
with zero valence electrons
C
with 2 valence electrons
D
with 5 valence elctrons
8) Protons in one atom in any element is
A
the same as the atomic number
B
found on the side
C
found in the electron cloud
D
found at the bottom
9) The elements Phosphorus, Arsenic and Bismuth are all in the same...
A
period because they have same orbitals
B
Electron cloud
C
period because of the same valence electrons
D
group because of the same orbitals
10) How are the elements Nb, Co and Sc organized?
A
Co and Sc are in the same period
B
Co and Sc are in the same group
C
Nb and Co are in the same cloud
D
Nb and Co are in the same group
11) Which group on the periodic table is the most stable and considered noble gases?
A
Group 18
B
Group 17
C
Group 1
D
Group 6
12) Which of the following could be a trend or pattern on the Periodic Table?
A
atomic number and atomic mass increase from left to right in a period and orbital levels increase from top to bottom in a gr
B
atomic number and atomic mass increase from left to right in a period, and orbitals stay the same in each group
C
atomic number and atomic mass stay the same in both the periods and the groups
D
atomic number and atomic mass decrease from left to right in a period, along with the groups
13) What kind of properties would the element copper have?
A
high conductivity, high malleability, high luster
B
low conductivity , high malleability, low luster
C
high conductivity, low malleability, low luster
D
low conductivity, low malleability, low luster
14) An 8th gr student examines an object that is pale, brittle and dull: what could the object be?
A
a metal
B
a nonmetal
C
a metalloid
D
a gas
15) A NONMETAL would have the following properties -
A
dull, malleable, good insulator
B
dull, brittle, good insulator
C
dull, malleable, good conductor
D
brittle, shiny, good conductor
16) What kind of a solid would you use to make into thin wire to create a cell phone?
A
Nonmetal
B
Metalloid
C
Noble gas
D
Metal
17) Why is aluminum and copper good for cooking and electricity?
A
Nonmetals are good conductors
B
Metals are good conductors
C
Nonmetals are good insulators
D
Metalloids are good gases
18) Using the formula D=m/v, solve for D=16.7 mass/4.4 volume to the nearest tenth
A
3.0
B
8.3
C
3.8
D
2.2
19) If you had a volume of liquid of 35 and and the mass of the liquid 105 grams - what is the Density
A
D=35/105=3.0
B
D=105/105=0
C
D=35/100=350
D
D=105/35=30
20) If an object weighed a mass of 37.5g and then put into a liquid with a volume of 10/mL what is the Density?
A
3.75
B
30
C
307
D
375
*select an answer for all questions
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