Unit 3/4 Review Question Preview (ID: 49098)
8th Science.
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What kind of properties would the element copper have?
a) low conductivity, low malleability, low luster
b) low conductivity , high malleability, low luster
c) high conductivity, low malleability, low luster
d) high conductivity, high malleability, high luster
An 8th gr student examines an object that is pale, brittle and dull: what could the object be?
a) a gas
b) a metal
c) a nonmetal
d) a metalloid
Which of the following could be a trend or pattern on the Periodic Table?
a) atomic number and atomic mass decrease from left to right in a period, along with the groups
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 increase from left to right in a period and orbital levels increase from top to bottom in a gr
d) atomic number and atomic mass stay the same in both the periods and the groups
A NONMETAL would have the following properties -
a) brittle, shiny, good conductor
b) dull, malleable, good conductor
c) dull, brittle, good insulator
d) dull, malleable, good insulator
Which group on the periodic table is the most stable and considered noble gases?
a) Group 1
b) Group 18
c) Group 17
d) Group 6
How are the elements Nb, Co and Sc organized?
a) Nb and Co are in the same cloud
b) Co and Sc are in the same period
c) Co and Sc are in the same group
d) Nb and Co are in the same group
The elements Phosphorus, Arsenic and Bismuth are all in the same...
a) period because they have same orbitals
b) group because of the same orbitals
c) period because of the same valence electrons
d) Electron cloud
What is the best way to identify a Beryllium atom?
a) Has no mass
b) Has 4 protons
c) Mass is 1/2000 amu
d) Has no nucleus
The most reactive metal would be the one...
a) with zero valence electrons
b) with 2 valence electrons
c) with 7 valence electrons
d) with 5 valence elctrons
Protons in one atom in any element is
a) found on the side
b) found at the bottom
c) the same as the atomic number
d) found in the electron cloud
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
What subatomic particle SURROUNDS the nucleus?
a) Protons
b) Neutrons
c) Electrons
d) All of the above
Inside the nucleus, what is the atomic number represented?
a) Electrons
b) Protons
c) Neutrons
d) Electron cloud
What would help when finding the charge of an atom's nucleus?
a) Chemical Reactivity
b) The symbol
c) Mass number
d) Physical properties
Which of the following is not found in the nucleus?
a) Atomic mass
b) Protons
c) Neutrons
d) Electrons
What kind of a solid would you use to make into thin wire to create a cell phone?
a) Metalloid
b) Noble gas
c) Metal
d) Nonmetal
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
Using the formula D=m/v, solve for D=16.7 mass/4.4 volume to the nearest tenth
a) 3.0
b) 2.2
c) 3.8
d) 8.3
If you had a volume of liquid of 35 and and the mass of the liquid 105 grams - what is the Density
a) D=35/100=350
b) D=35/105=3.0
c) D=105/35=30
d) D=105/105=0
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) 375
b) 3.75
c) 307
d) 30
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