SCIENCE QUIZ

One of these is not a separation technique

• sieving

• handpicking

• magnetising

• soaking

How could you increase the concentration of a solution?

• Add more solute

• Add more solvent

• Remove some solute

• increase the solvent

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

• A = distillate, B = filtrate
• A = filtrate, B = residue
• A = residue, B = filtrate
• A = residue, B = distillate

When something becomes different from its normal form we say a ____ has occurred.

• environment

• change

• charge

• competition

cookie dough is a ....

• temporary change

• permanent change

When you burn logs from trees, is that change reversible or irreversible? It is ___

• reversible

• irreversible

Which material is soluble?

• sand

• iron filings

• spaghetti

• salt

What is a reversible change?

• A process in which NO new materials are made and which can be reversed. Just a change of state occurs.

• A reaction that makes new substances and cannot be reversed. Usually involving heating, bubbling or fizzing.

Name how this (ice to water) has changed state

• Melting

• Burning

• Freezing

• All of the above

Melting of chocolate is a ______

• reversible

• irreversible