Chapter 3 Wrap up

This photo shows a mixture of sand and glass marbles. Think about mixing the marbles with more of the sand. Which tool would be most useful for separating the mixture?

• A Tank of Water
• A Magnet
• A Sieve
• A Freezer

How does the sugar change when it is mixed with tea?

• The sugar changes temperature.
• The sugar breaks into smaller pieces.
• The sugar becomes magnetic.
• The sugar changes into another substance.

Tonya makes two models of solutions. Beaker 1- She mixes red sand and yellow sand Beaker 2- She mixes red water and yellow water Which is a better model of a solution?

• beaker 1
• beaker 2
• both beakers are solutions
• neither beaker is a solution

This illustration shows salt and water. Salt and water form a solution. How does salt change when it dissolves in water? Select two answer choices.

• The salt melts.
• The salt breaks apart into tiny pieces.
• The salt becomes a new substance.
• The salt mixes evenly throughout the water.

If you mix 10 grams of sugar in water, can you get 10 grams of sugar when you separate the mixture?

• yes
• no

A sieve is a tool with small holes. Which mixture would the sieve be most useful for separating?

• metal marbles and glass marbles
• pebbles and water
• salt and water
• pens and pencils

This photo shows a mixture. Which two materials is this mixture made of?

• glass beads
• sand
• iron filings
• salt

How can you separate a sugar-and-water solution?

• filter the solution
• use a sieve
• use a magnet
• boil the solution

A mixture is made from 80 grams of cereal and an unknown amount of milk. The mass of the cereal and milk together is 170 grams. What is the mass of the milk?

• 55 grams
• 30 grams
• 90 grams
• 100 grams

Metal pieces are mixed with wood shavings. Which two statements are true about the physical properties of the mixture?

• The physical properties of the metal pieces will change.
• The physical properties of the metal pieces will not change.
• The physical properties of the wood shavings will change.
• The physical properties of the wood shavings will not change.