Mixtures

Which physical property would be most useful in separating wood beads from clay beads?

• Solubility

• Density

• Magnetism

• Mass

All of the following are examples of mixtures except –

• cement

• snack mix

• lemonade

• helium

Several ways to separate mixtures are listed below:

A student is given a mixture of sugar and water. Which of the ways listed above is the best way to separate the mixture?

1. Pour the mixture through filter paper.

2. Use a magnet to collect one part of the mixture.

3. Evaporate the water by boiling the mixture.

4. Use tweezers to collect one part of the mixture.

• 1

• 2

• 3

• 4

Which picture correctly represents what happens when you mix oil and water?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-2

A teacher mixes salt, pepper and iron filings in a beaker. Which two physical properties can be used to separate these three materials?

• Solubility and magnetism

• Solubility and mass

• Magnetism and mass

• Solubility and conductivity

A teacher mixes four different colors of candycoated chocolates in a bowl. What would be the best way to separate the four different candies in the mixture?

• Use a sieve to separate the four different colors of candy.

• Use a balance to weigh the four different colors of candy.

• Use tweezers to separate the four different colors of candy.

• Use filter paper to separate the four different colors of candy.

A student dissolves 100 g of salt in a beaker of water. Then the mixture is boiled until all of the water evaporates. How much salt most likely remains?

• 95 g, because some of the salt is destroyed

• 100 g, because the mass of the salt remains the same

• 110 g, because the mass of the salt increases

• There is not enough information to answer this question

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which mixture below could be easily separated using a magnet?

• Magnets and iron filings

• Iron filings and sugar

• Sand and water

• Oil and water