Science Quiz

Matter is anything that *

• has mass and takes up space

• is a solid or a liquid

• has volume

• is a gas

Holly has a cube of sugar. She crushes it into powder. What has changed about the sugar? Mark only one oval.

• The mass

• The weight

• The shape

• The shape and the mass

Dash pours 15 grams of oil and 40 grams of water into a beaker. The beaker has a mass of 90 grams. When he places the beaker with the mixture onto a balance scale, it will show a mass of:

• 134 grams

• 145 grams

• 55 grams

• 130 grams

Which mixture could you BEST separate with a filter?

• Salt and pepper

• Rocks and woodchips

• Sugar and iron filings

• Sand and water

Danielle pours lemon juice over a tablespoon of baking soda. At first, many bubbles form, but then they slowly stop forming. What is the BEST clue that this is a chemical change and not a physical change?

• The bubbles stop forming

• Bubbles form without heating the liquid

• The lemon juice and baking soda form a mixture

• The mixture can be separated

An ice cube melts because:

• Heat is being added and the particles begin to slide past each other

• The ice dissolves in water

• Heat is being added and the particles begin to vibrate

• The particles bounce freely

Which combination could you use a magnet to separate?

• Sugar and water

• Sawdust and woodchips

• A salad

• Iron filings and salt

When a rock is placed in water, it sinks to the bottom of the container. This happens because

• The rock is heavier than the water

• The rock is less dense than the water

• The rock is more dense than the water

• The rock is lighter than the water

Density shows us how tightly packed particles are in an object. When the particles are tightly packed together, the object has ________ density.

• High

• Low

Density shows us how tightly packed particles are in an object. When the particles are NOT tightly packed together, the object has ________ density.

• High

• Low