Solubility
What is solubility?
The ability of a substance to dissolve in another substance
What is mass?
Measurement of the amount of matter in an object.
What is magnetism?
A force where certain metals attract and repel
What determines if something sinks or floats?
Density of the object.
What is conductivity?
The ability of a material to conduct electricity or heat
What do we call it when one object appears to disappear in a liquid such as water?
Dissolve
How is mass measured?
Using a balance scale, pan balance, or triple beam balance.
What do we call it when two magnets push away from each other?
Repel.
Why do some objects float in water while others sink?
Due to the difference in density between the object and the water.
How does the conductivity of metals compare to that of insulators?
Metals have high conductivity, while insulators have low conductivity.
Explain what will happen if salt is placed in hot water? Use academic vocabulary.
The salt will dissolve in the water because the salt is soluble.
What is the difference between mass and weight?
Mass is a measure of matter; weight is the force exerted by gravity on that matter.
What positions do the poles on a magnet need to be in to attract?
Opposite poles attract. North and South pointing towards each other
What states of matter are affected by density.
All states of matter are affected by density.
What materials are typically good conductors of electricity?
Metals
What is easier to dissolve salt in, hot water or cold water. Explain your answer.
It is easier to dissolve salt in hot water because the particles are moving faster in hot water and dissolve faster.
How does gravity affect mass?
Gravity does not affect mass, but it affects weight.
Explain how the different magnetic poles interact?
Opposite poles attract, like poles repel.
How can density determine whether an object will sink or float?
If the density of the object is greater than the density of the fluid, it will sink. If less, it will float
What kinds of energies are conducted?
Thermal and Electrical
A pencil, a metal nail, a cotton ball, and sugar are placed in water. Describe what happens.
Noting happens to the pencil, metal nail, or cotton ball but the sugar will dissolve.
Which one has the most mass: 300 grams of cotton, 300 grams of grass, or 300 grams of bricks?
They are all equal in mass.
What tool do we use to harness the Earth’s magnetism for navigation?
Compasses point toward the magnetic north, aiding in navigation.
Why does a helium ballon go up in the sky?
The ballon rises in the sky because the gas helium is less dense than the air.
What of the following objects would be safe to use to move a hot pan? An oven mitt, plastic gloves, or metal gloves
Explain your answer.
An oven mitt is best to use because it is made of cloth that is an insulator.