Benchmark

Quiz
•
Physics
•
8th Grade
•
Hard
+17
Standards-aligned
Charles Martinez
FREE Resource
47 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An atom of calcium-48 and an atom of calcium-47 differ in
atomic number.
nuclear charge.
number of neutrons.
number of electrons.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
.
.
.
.
.
.
You are hired as a scrap metal dealer. A customer wants to sell you a piece of precious scrap metal. You know it is one of these common metals. You slowly heat the metal and it melts at 962 °C. You also take the density of the metal and find it to be roughly 10.5 g/cm3. What is the MOST LIKELY identity of the metal?
Copper
Gold
Silver
Zinc
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
One difference between mixtures and pure substances is that
mixtures can be physically separated.
mixtures are made of one type of atom.
pure substances have no chemical bonds.
pure substances can be physically separated.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In physical science lab, Ben and Jerry added small pieces of magnesium to hydrochloric acid. They noticed that bubbles formed, the test tube got hot, and the magnesium disappeared. What is a sign that a chemical reaction has taken place in this experiment?
odor
gas is produced
magnesium disappeared
decrease in temperature
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It's Peggy Sue's birthday and she's about to blow out the candles on her cake. Brother Roger stops the party when he shouts: "Look at that! Chemical and physical changes taking places on your birthday cake!"
How would you respond to Roger?
Roger is incorrect. The melting wax is a physical change but there is no chemical change taking place.
Roger is correct. Lighting the match is a chemical change and burning the candles is a physical change.
Roger is correct. The melting wax is a physical change and the burning candle wick is a chemical change.
Roger is incorrect. Only a chemical change is taking place as evidenced by the light and heat of the burning candles.
Tags
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The table shows the density and volume of four liquid samples. The four liquids do not mix with each other. What is the order in which the layers will be formed, from top to bottom, if the four liquids are poured into a beaker and allowed to settle?
.
.
.
.
.
.
Sample A; Sample B; Sample C; Sample D
Sample C; Sample A; Sample D; Sample B
Sample D; Sample C; Sample B; Sample A
Sample B; Sample D; Sample A; Sample C
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If water with the mass of 15.0 grams is heated into water vapor in a closed system such as a closed glass jar, what is the mass of the gas after the water completely vaporizes?
13.5 grams
15.0 grams
16.5 grams
The mass cannot be determined without knowing the volume.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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