Mixtures and Solutions
A combination of 2 things is called this.
What is a mixture?
A temporary magnet made up of a wire wrapped around a core.
What is an electromagnet?
This tells us how tightly packed particles are in an object.
What is density?
Mixtures can be _____________ into the substances that make them up.
What is separated?
What is it called when one substance completely dissolves in another substance?
What is a solution?
The places on a magnet where the magnetism is the strongest are the:
a. south pole and middle
b. north pole and middle.
c. north and south pole.
d. east pole and west pole.
What is (c) north and south pole.
Name two ways to measure volume.
What is:
Length x Width x Height
Water Displacement
A simple electromagnet can be made with which of the following?
An electric current.
A turbine and a nail.
A nail, a wire, and a battery.
A compass and a battery.
What is
A nail, a wire, and a battery.
Water and sugar mixed together is an example of what kind of mixture?
What is a homogenous mixture
How is an electromagnet different from a permanent magnet?
A. An electromagnet is smaller and less powerful.
B. An electromagnet’s magnetism can be turned off.
C. An electromagnet can be built without using metal.
D. An electromagnet does not attract objects containing iron.
What is B. An electromagnet’s magnetism can be turned off.
Which mixture could you BEST separate with a filter?
a. Salt and pepper
b. Rocks and wood chips
c. Sugar and iron filings
d. Sand and water
What is d. Sand and water?
Which choice best completes this sentence: Like poles ___________, while unlike poles ______________.
What is repel, attract?
a type of mixture that allows the components to be seen as two or more phases are present
What is a heterogenous mixture?
Which statement is true?
a. Bar magnets are permanent, but electromagnets are temporary.
b. Bar magnets and electromagnets are permanent.
c. Electromagnets are permanent, but bar magnets are temporary.
What is (a) Bar magnets are permanent, but electromagnets are temporary?
When a rock is placed in water, it sinks to the bottom of the container. This happens because
What is the rock is more dense than the water?
Name three things in which we might see electromagnets.
What is in doorbells, cranes, phones, computers, (most electronics)
What are the two components of a solution?
What are solute and solvent.
Compare and contrast electromagnets and bar magnets (Fully explain how they are similar and different from one another).
Electromagnets are created using electricity, while bar magnets are natural. Electromagnets are temporary while bar magnets are permanent. Both attract metals containing iron, cobalt, steel, or nickel.
Which combination could you use a magnet to separate?
Sugar and water
Sawdust and wood chips
A salad
Iron filings and salt
What is Iron filings and salt?
Which of the following actions will NOT help you separate a mixture?
a. Heating
b. Filtering
c. Cutting
d. Evaporating
What is c. Cutting?