G8_Science_T2_EOT Vocab Review

Both melting point and boiling point are _______

• energies required for the substance to change state.

• temperature at which the substance changes state.

• pressure required for the substance to change state.

• force required for the substance to change state.

Tags

LO 1

Match the following

• change of S to G without L state

• Sublimation

• made up of electrons & charged particles

• Heat of fusion

• energy required to change from L to G

• Heat of vaporisation

• energy required to change from S to L

• Plasma

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LO 1

When pumping air into bicycle or car tires, Khalid did not overfill. This is because Khalid knew that the tire would burst when the air inside it undergoes

Tags

LO 1

Identify the 2 substances in the image on right.

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LO 2

The image shows 3 examples of ________

• a nucleus

• an element

• a compound

• a colloid

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LO 2

Analyse the pictures and label them appropriately

c

a

mixture

element

compound

suspension

colloid

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LO 2

Mendeleev's periodic table arranged elements differently than the modern periodic table. It is now based on _________.

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LO 3

Elements in the same period have

• same atomic number

• same mass number

• same number of electron levels(shells)

• similar chemical properties

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LO 3

Elements in the same group have

• same atomic number

• same mass number

• same number of electron levels (shells)

• similar chemical properties

Tags

LO 3

Explain briefly, in terms of kinetic theory, how particles of substance behave at its boiling point.

Answer explanation

At boiling point, particles in a liquid have enough energy to overcome the external pressure acting on the surface of the liquid and they are able to move out into the random arrangement of particles in gaseous state.

Tags

LO 1