Marvelous Monday Science Homework

If you kick a ball into the air, what is the effect?

• the ball will go higher and leave the Earth's atmosphere

• the ball will come back down because gravity pulls it towards the Earth's center

• the ball will come back down because gravity pushes it toward the Earth's poles

• the ball will not be impacted by Earth's gravity

Which describe the particles in a solid? Choose all that apply.

• they are packed close together

• they can flow

• they vibrate in place

• the particles are able to move around and slide past each other

• the particles are very far apart from each other

Which describes a solution? Select all that apply

• the individual components can be seen visually

• one substance is evenly distributed through another substance

• the substances are physically combined

• the substances can be separated

If you climb a ladder and drop an apple, what is the effect on the apple?

• the apple's mass increases as it gets closer to the ground

• the apple's size decreases as it gets closer to the ground

• the force of gravity pushes the apple upwards

• gravity pulls the apple towards the Earth's center

How would a mixture of iron filings and sand be separated?

• dissolve the iron filings in water, then evaporate the water

• pour the mixture through a filter

• use a magnet to collect the iron filings

• put the mixture in water - the iron filings will float and the sand will sink

Which is a true statement about the rate of dissolving substances?

• the rate of dissolving will increase when the mixture is stirred

• the rate of dissolving will decrease when the mixture is heated

• the rate of dissolving will increase when larger particles of solute are used

• the rate of dissolving will decrease when smaller particles of solute are used

Which is MOST concentrated?

• 10 grams sugar in 100 mL water

• 10 grams sugar in 200 mL water

• 20 grams sugar in 100 mL water

• 20 grams sugar in 200 mL water

Which is true for a compound, but not a mixture?

• the substances are chemically combined

• the substances can be easily separated

• the substances are physically combined

• the properties of each substance used stay the same

Think of the solution saltwater. Which statement is NOT true about this solution?

• the water is the solute

• the water is the solvent

• the salt is the solute

• the salt and water are physically combined

Which of the following has the strongest gravitational pull?

• Earth

• Jupiter

• Saturn

• Mars

• the sun