Physical Change

What is Physical Change?

• It is the change of state of matter

• It is to observe the change in the chemical composition

Which of the following is a Physical Change? (May contain more than 1 answers)

• Iron Rusting

• Ice Melting

• Sugar in water

• Glass breaking

• Copper oxidizing

What is the particle theory of SOLIDS? (2 answers)

• The particles are arranged in a regular pattern and are tightly packed

• The particles move around randomly with high kinetic energy

• Solids can be compressed

• Its density is the highest of all states of matter

Which of the following changes of states is exothermic?

• Melting Salt

• Liquid Nitrogen boiling

• Oxygen Condensing

• Melting butter

• Water evaporating

Which of these examples are the particle theories of gases? (Could have more than 1 answer)

• The particles moves randomly at high kinetic energy

• Gases have the lowest densities

• Gases can be compressed easily

• The forces of attraction between the particles are very weak

• None of the above

What is the difference between liquids and solids?

• The particles in solids vibrate on the spot while in liquids they move around randomly with high kinetic energy

• The particles in solids slide and glide around each other while in liquids they vibrate on the spot

• The particles in solids move around randomly with high kinetic energy while in liquids they slide and glide around each other

• The particles in solids vibrate on the spot while in liquids they slide and glide around each other

• None of the Above

Water freezing into ice is endothermic

• True

• False

Which of the following resembles condensation?

• Liquid > Gas

• Solid > Liquid

• Gas > Solid

• Gas > Liquid

• Liquid > Solid

Which of the following examples is endothermic? (May have more than 1 answer)

• Carl is melting some butter so he can make sure his cod doesn't stick to his wok

• Jasmine is making some ice so she can put it in her coffee

• Shelton is heating up ethanol to find its boiling point

• Marcus is observing water vapor condensing onto his car windshield

The following changes of states contains evaporation/boiling, except...

• Australia's riverbanks are drying up

• Walter getting pure water using simple distillation

• Ethan watching his ice cubes melt in his hot chocolate

• Qisha hanging her clothes under the sun to dry