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Welcome to the Materials Quiz (ages 12 13) Investigating Materials

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Q1:What is the boiling point of pure water?

0°C50°C100°C

Q2:What does ductile mean?

Able to be stretched into wiresAble to be dissolvedAble to conduct electricity

Q3:What happens during distillation?

Solids are magnetically pulled outSolids are separated from liquidsLiquids are separated based on boiling points

Q4:Which method is best for separating a soluble solid from a liquid?

MagnetismEvaporationFiltration

Q5:Why does metal expand when heated?

It loses energyIt absorbs waterParticles move faster and spread out

Q6:What is a saturated solution?

A solution that cannot dissolve more soluteA solution containing only waterA solution with excess solvent

Q7:Which property helps metals conduct electricity?

They are hardThey have free electronsThey are shiny

Q8:Why is glass used in windows?

It's a good conductorIt's transparent and strongIt's magnetic

Q9:What is thermal conductivity?

The ability to stretchThe ability to reflect lightThe ability to let heat pass through

Q10:What is the main difference between a compound and a mixture?

Mixtures are chemically bondedCompounds can be separated by physical meansCompounds have fixed compositions

Q11:What does the term 'solubility' refer to?

How fast a substance burnsHow well a substance dissolves in a solventThe melting point of a substance

Q12:Which of these is a chemical change?

Boiling waterBurning woodMelting chocolate