Science Review 1

Which tools are best for separating a mixtures of sand, iron filings, and water?

• Hot plate and filter

• Tweezers and filter

• Filter and magnet

• Magnet and hot plate

Which substances, when mixed together, maintain their original physical properties?

• gravel and water

• wood chips, water and sand

• sand and water

• all of the above

A student makes a garden salad by stirring lettuce, tomatoes, carrots, and croutons together in a bowl. Why is the garden salad a mixture?

• the student cut the vegetables into equally sized pieces

• the vegetables are combined by maintain their physical properties

• the croutons cannot be taken out of the salad

• the salad grew from a garden

Which mixture can be separated using a filter?

• sand and iron filings

• saltwater

• sand and water

• none of the above

Evaporation is _______________ . 

• the process of a liquid change to gas. 
• the process of a gas change to liquid.
• a new type of car built for 2018. 
• process of a liquid freezing. 

When a substance changes how it looks, but not what it's made of is ____________ . 

• chemical change
• physical change
• a makeover
• matter change

What are three states of matter?

• Alvin, Simon, and Theodore
• Physical and Chemical Changes
• Solids, Liquid, and Gases
• hard, soft, and slim

What is a conductor?

• a material that allow heat pass through easily

• a material that do not allow heat pass through easily

• a material that turns cold when heated

• a tool for measuring temperature

Which of these is a better conductor?

• 
• 

Which of these is good conductor?

• cloth glove

• plastic foam cup

• rubber glove

• aluminum can