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100
Mixtures of solids can be separated according to their properties, such as in the image shown below. Which of the following properties is being used to separate the objects in the image?
magnetism
100
Which property of a rubber band will stay the same when the rubber band is stretched?
mass
100
Which of these items will NOT dissolve in water?
Salt, soap, sugar, olive oil.
Olive oil
100
What does the temperature indicate in the particles of a substance?
How fast they are moving.
100
Water freezes at what temperature?
- 212 degrees F
- 32 degrees C
- 32 degrees F
- 212 degrees C
- 32 degrees F
200
Craig has a mixture of salt, pepper, and warm water. What will happen if Craig pours this mixture through a coffee filter?
The warm water will pass through the coffee filter, leaving the salt and pepper behind.
200
________ is the amount of three-dimensional space occupied by a substance or enclosed by a closed surface.
Volume
200
What is a Sieve used for?
A sieve is a tool used to separate solids from liquids or larger pieces from smaller pieces by passing them through a mesh or openings.
200
A substance that takes the shape of its container and has a definite volume is a ______ .
Liquid
200
What happens to a gas when the temperature decreases?
- It expands.
- It rises.
- It condenses.
- It becomes less dense.
It becomes less dense.
300
Why do some mixtures disappear in water?
The particles of the substance being dissolved break apart and spread evenly throughout the water, becoming too small to be seen, forming a solution.
300
All matter is composed of parts that are too small to be seen without magnification. What is the smallest unit of all matter?
The Atom.
300
What is the definition of Mass?
Mass is a measure of the amount of matter contained in a physical body.
300
The process by which a liquid changes to a gas is called __________.
- condensation
- evaporation
- precipitation
- transpiration
condensation
300
The process by which a gas changes into a liquid is called ________.
- evaporation
- precipitation
- condensation
- transpiration
Condensation: This is the phase transition where a substance changes from a gas (or vapor) to a liquid state.
400
A beaker contains a mixture of sand and salt. Which of the following procedures will best separate this mixture?
A placing magnet in the beaker
B Heat the beaker on a hot plate
C pouring the contents of the beaker through a filter
D adding warm water to the beaker and pouring through a filter
Heated the beaker on a hot plate.
400
If you make hot cocoa what can you do to make the cocoa mix dissolve faster?
Stir the hot cocoa.
400
What is volume?
Volume is defined as the amount of three-dimensional space occupied by a substance or object.
400
The molecules in a liquid are
- closer together than in a solid and further apart than in a gas.
- are spaced the same as in solids and gases.
- closer than in gases but further apart than in solids.
- none of the above
3.closer than in gases but further apart than in solids.
400
Plasma is the most common state of matter on Earth.
- True
- False
False
500
Brick and glass properties are similar, which is most different when comparing a brick paver and a sliding glass door?
A shape
B hardness
C temperature
D state of matter
Hardness.
500
If you have an iced tea or a hot tea, why was sugar left at the bottom of the iced tea but NOT at the bottom of the hot tea?
The iced tea was at a lower temperature than the hot tea.
Hot dissolves sugar faster.
500
Which of these describes the particles of a solid?
The particles vibrate in place.
The particles move freely.
The particles move very fast.
The particles spread out evenly.
The particles vibrate in place.
500
A change in matter that does not form a different kind of matter is called a ________change.
- chemical
- physical
- physical
500
A liquid takes the shape of its________and does not have its own __________ .
- money, air pressure
- container, shape
- container, gas
- car, checking account
container, shape