Separating Mixtures Techniques
This separation technique is used to separate salt and water
Evaporation
True or False
We cannot separate mixtures.
False!
Yes, we can with filtration, separation, and sieving!
What is the definition of a force?
A force is a push or a pull
If all the forces acting on an object are BALANCED, the object will be....?
AT REST (it does NOT move)
How do we separate the seeds and pulp from the freshly squeezed orange juice?
Filtration
Which of the following will dissolve in water?
a)pepper b)sand c)salt d)flour
C) Salt
It is easier to rollerblade on the sidewalk than on grass because of ...?
FRICTION
TWO PARTS:
If you push a box to the LEFT with 10N of force, and your friend pulls the same box to the LEFT with 10N of force, how much force is acting on the box, and which direction will it move?
20N to the LEFT
How do we separate iron filings and sand?
Using a MAGNET
Teria brought a bag of party mix to be used as a snack for the next few days. The party mix included: crackers, peanuts, candy, and cereal. Teria does not like peanuts. Which tool would be best to separate the peanuts from the party mix?
a)a magnet b)pinchers c)a sieve d) a funnel
B) Pinchers (also known as tweezers)
A spring scale measures which force?
GRAVITY
Which ball would require the most force to set in motion?
a)4kg soccer ball
b)10kg bowling ball
c)6kg basketball
B) 10kg Bowling Ball, it has the most mass
Can you use sieving to separate water and vinegar?
NO!
Sieving can mostly separate solids of different sizes
List the three factors affecting how quickly a substance dissolves.
1) Temperature,
2) Shaking or Stirring
3) Particle Size/Surface Area
What two words describe how magnetic force works?
Hint: "A" & "R"
Attraction & Repulsion
Team A and Team B are playing Tug-of-War. Describe TWO forces acting upon the game.
Gravity - players are on the ground
Pull - each team is pulling
Friction - the winning team tries not to slip