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WorksheetsPhysical Science Test Review
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
I was baking a cake and accidentally spilled vinegar on my baking soda. When it stopped fizzing I noticed that about half of the baking soda seemed to disappear. This is because the vinegar:
a)
Melted into its liquid form
b)
Combined with the vinegar and produced a new substance
c)
Dissolved in the vinegar, but is still in the liquid
d)
Evaporated into the air
2.
A solid rubber ball sinks when placed in water. What will happen if the ball is cut in half and one of the smaller pieces is placed underwater?
a)
The smaller piece will rise to the top and float
b)
The smaller piece will sink
c)
The smaller piece will rise and hang in the middle
d)
The smaller piece will dissolve in water
3.
A pebble is dropped into a cup of water and sinks to the bottom of the cup. A solid metal bead of exactly the same size is dropped into the same cup and sinks to the bottom of the cup. How do the pebble and the metal bead compare?
a)
The metal bead and the pebble have the same density
b)
The metal bead and the pebble have the same mass
c)
The metal bead and the pebble are denser than water
d)
The metal bead and the pebble have the same density as water
4.
Mr. K stirred powder into water to make Jell-O. Which best explains what happened to the molecules making up the gelatin powder?
a)
They were dissolved by the liquid water
b)
They were melted by the liquid water
c)
They changed into water molecules through chemical change
d)
They were surrounded by the water molecules and disappeared
5.
Mr. G mixes a small amount of gold with a large amount of copper and heats them up until they melt. What has happened?
a)
All the copper has turned to gold
b)
Some of the copper has turned into gold
c)
Mike has made a mixture of copper and gold
d)
A chemical changed has occurred creating a new substance
6.
Elements are often called the building blocks of matter because:
a)
They are often used to build things
b)
Elements have mass volume
c)
Elements are pure substances
d)
All matter is made up of one or more elements
7.
The pH of the orange huice is 4 and the pH of the milk is 6.5. Which beverage is more acidic?
a)
Both beverages are basic
b)
The orange juice is more acidic
c)
The milk is more acidic
d)
Both beverages have equal acidic properties
8.
The formula for calcium chloride is CaCl2. What does this mean?
a)
Calcium and chloride have two covalent bonds.
b)
The chlorine is two times stronger than the calcium
c)
Two chlorine atoms are bonded to calcium atom
d)
The chlorine is unstable until bonds with two more calcium
9.
If a divided container was filled half with red hot water and half with blue cold water, what would happen if the divider was pulled out and the water was allowed to meet?
a)
The cold blue and warm red water will mix to form cooler purple water
b)
The hot red water will sink to the bottom and the cold blue water will rise to the top
c)
The cold blue water will sink to the bottom and the hot red water will rise to the top
d)
The hot water red will stay on one side of the tank and the cold blue water on the opposite side of the tank
10.
What type of change is s water as a liquid changing into water as a gas?
a)
Physical Change
b)
Chemical Change
11.
What happens to the atoms in the methane (CH4) molecule below?
CH4 + 2O2 -> CO2 + 2H2O
CH4 + 2O2 -> CO2 + 2H2O
a)
Atoms are destroyed in the chemical reaciton to form new atoms
b)
The atoms rearrange and form new bonds to create new substances
c)
New atoms are created in the chemical reaciton through combustion
d)
The chemical properties of the atoms change due to the change in preperties
12.
I mix baking soda and water in a bag. The baking soda mixed with the water, but there was no bubbling, color change or temperature change in the bag. What best describes what happened?
a)
A physical change (dissolving)
b)
A chemical change (state of matter)
13.
Bruce Wayne noticed rust on the metal nozzle on the end of his garden hose. What caused this?
a)
The nozzle was exposed to water, causing rust
b)
The water running through the nozzle caused the iron in the nozzle to rust
c)
The iron in the metal nozzle combined with oxygen in the air to form rust or iron oxide
d)
The rust or corrosion will appear on all metals over time
14.
Why do ice cubes float higher in salt water than freshwater?
a)
Salt water is more dense than the frozen freshwater (ice cube)
b)
Frozen freshwater (ice cube) is more dense than the salt water
c)
Salt molecules make objects more buoyant
d)
Freshwater and ice have the same density
15.
If an atom has 6 protons and 6 neutrons, how many electrons would be needed for a neutral atom?
a)
2
b)
12
c)
3
d)
6
16.
Atoms are made up of protons, neutrons and electrons. Why do electrons have no charge even though most of their particles are charged?
a)
The neutrons are neutral and cancel out the positive protons and negative electrons
b)
The number of positive protons and negative electrons in each atom is the same
c)
The electrons are moving so fast the negative charge cannot be detected
d)
Atoms bond with other atoms, cancelling out the charge of each individual atom
17.
The location of an element on the periodic table tells you:
a)
Information regarding the properties of the element
b)
The alphabetical order of the elements
c)
The importance and abundance of the elements on Earth
d)
The order of discovery of the elements
18.
What property of metals does the term conductivity describe?
a)
Density and buoyancy
b)
Melting point and freezing point
c)
Ability to tranfer heat and electricity
d)
Reactivity with other elements
19.
Change in color, formation of a precipitate, production of gas bubbles and change in texture are examples of a:
a)
nuclear reaction
b)
physical property
c)
endothermic reaction
d)
chemical reaciton
20.
How did Mr. Cronk defeat the grizzly bear?
a)
Using the scientific method
b)
Eating more authentic Mexican food than it
c)
Exploding its head with a shred guitar solo
d)
Settling our differences over coffee
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