Teach Me Science Project!

Matter: Properties and Change!

Which is the best example of a pure substance?

  • Peanuts
  • Milk
  • Gold
  • Air

Correct Answer,Keywords, and Definitions

  • The correct answer is gold because gold is a pure substance, and the only pure substance out af all four answers
  • Pure Substance//a sample of matter w/both definite and constant composition w/distinct chemical properties
  • pure substance = element = atom = uncuttable
Pure Substances vs Mixtures

An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?

  • The molecules will begin to mover slower
  • The molecules will begin to move slower
  • The molecules will begin to increase in density
  • The molecules will begin to condense in the air
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Correct Answer, Keywords, and Definitions

  • (Ice cube) Cold, (heated) Hot, Most Likely, Molecules (slower/faster)
  • The correct answer is the molecules will begin to move faster because as the ice cube gets hotter (solid to liquid to gas) it starts to form a liquid and eventually turns to a gas making the molecules move faster
States of Matter (solids, liquids and gases) | The Chemistry Journey | The Fuse School

What happens to water molecules during the boiling process?

  • They move faster and move farther apart as the absorb heat
  • They move faster and remain close together as they absorb heat
  • They move more slowly but move farther apart as they lose heat
  • They move move faster and farther apart as they lose heat
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Correct Answer, Keywords, and Definitions

  • Boiling Process
  • Kinetic energy is the energy of motion (basically movement)
  • The first option (A) is correct because heat provides kinetic energy
Evaporation, Vapor Pressure and Boiling