Mixtures
Solutions
Force and Motion
Physical Properties
Need to know
100
What is a mixture?
A combination of two or more substances that can be separated in some way.
100
What is a solution?
A mixture where one substance is dissolved in another.
100
Is there motion when forces are unbalanced?
Yes
100
What happens to an object that is more dense than water?
It will sink.
100
What are the three main states of matter?
What are solid, liquid, and gas?
200
Name two examples of mixtures.
Trailmix and Salad. Answers will vary.
200
Name and example of a solution
Lemonade mixture dissolved in water.
200
How can you tell if forces are balanced?
If the object does not move or moves at a constant speed.
200
Are the following objects electrical insulators or conductors?
Paper clip, safety pin, copper.
Electrical conductors
200
What state of matter has a definite shape and volume?
Solid
300
Name three different ways to separate a mixture.
Filtration,strainer, hand, density, evaporation, or magnetism.
300
What does "conservation of matter" mean?
Matter cannot be created or destroyed, only changed in form.
300
What does friction do to an object?
it slows or stops objects from moving.
300
If you place a large screw into a graduted cylinder with 60ml of water in it and it rises to 80ml, what is the volume of the screw?
20ml
80ml- 60ml= 20ml
300
What state of matter takes the shape of its container?
Liquid
400
What materials can you use to create a mixture?
Answers will vary.
Sand, salt, water, iron filings, and oil.
400
How can you tell if something is dissolved?
The solute is no longer visible, and the solution is clear or uniformly mixed.
400
Student A pushes a box on the right side with a force of 50N. At the same time, student B pushes the same box on the left side with a force of 50N. Does the box move?
No, because the forces are balanced.
400
Do the following objects maintain all their (keep) or lose their physical state?
Salt, hot water, sand
Salt loses physical state since it will dissolve in water.
400
Which State of Matter can take on any size and shape.
Gas
500
Describe how iron filings and sand are a mixture.
Both substances can be seen separately, and their individual properties remain unchanged.
500
Why is matter conserved in a solution?
The total mass of the substances remains the same before and after mixing
500
What happens to a toy care as the inlincation of ramp increases?
The speed and distance the car will go will increase.
500
What physical property or properties do the following objects have in common?
A pencil, a battery, and a paperclip.
They are are solids and they do not dissolve in water (insoluble)
500
Which state of matter has particles that are tightly packed and stay in their place?
Solid