Mixtures, solutions, chemical, and physical changes

Which of the following is an example of physical change?

• burning gas on the stove

• cracking an egg

• cooking food

• rotting apples

A combination of 2 or more substances that cannot be easily separated is called?

• Solution

• Colloid

• Mixture

• Suspension

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

• Filter

• Sieve

• Magnet

• Evaporation

To separate a mixture of salt and water what separation tool/method is used?

• Evaporation

• Magnet

• Sieve

• Filters

What is a substance that is dissolved in another substance?

• Solution

• Solute

• Colloid

• Solvent

Which of the following is most likely the reason why the scientists stirred the solution at a high rate of speed?

• Stirring allows solvent to be dissolved.

• Stirring allows the solute to be more easily dissolved

• Stirring allows solute to do the dissolve the solvent.

• Stirring allows the solution to be unsaturated.

Ice melting is a what type of change?

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

What is a chemical change?

• How two chemicals react with one another when combined

• A property that we can measure or observe with our 5 senses or other tools

• When two chemicals react with one another to form a new substance.

• When a change occurs but it does not result in the formation of a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven...is an example of what type of change?

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

A group of students investigated physical and chemical changes using paper. The students recorded their observations in a table. Which student correctly recorded all the changes that took place?

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.MS-PS1-2