Chemistry For E&E

Question 1

Water has a [ ] specific heat

Answer 1

[high]
Energy input is required to change temperature

Question 2

Water has a [ ] latent heat of vaporisation

Answer 2

Energy input is required to induce a change of state

Question 3

The evaporation of water from a surface causes . . .

Answer 3

Cooling of that surface

Question 4

Water has a [ ] surface tension

Answer 4

High

Question 5

Valance electrons are in the [ ] shells

Answer 5

Outermost

Question 6

What is the octet rule?

Answer 6

Atoms tend to establish a complete outer shell.

So unstable atoms are the most reactive

Question 7

Oxidation reactions involve . . .

Answer 7

Loss of electrons

Atoms become cations

Because cats are good

Question 8

Reduction reactions involve . . .

Answer 8

Gain of electrons

“Reduction in charge”

Question 9

Ionic bonds are formed through . . .

Answer 9

The attraction of oppositely charged ions

Question 10

Co - valen- t bonds form when . . .

Answer 10

Atoms share 2 or more covalent electrons

Question 11

Electronegativity is . . .

Answer 11

An atom’s affinity for for electrons

Non polar covalent bonds= equal sharing of e-

Polar covalent bonds=unequal sharing of e-