Midterm Exam

Question 1

Protons can be identified by?

Answer 1

The atomic number

Question 2

Electrons can be identified by?

Answer 2

The atomic number

Question 3

Neutrons can be found by?

Answer 3

Atomic mass - Atomic number

Question 4

What are the rows (horizontal)called on the periodic table?

Answer 4

A period

There are 7

Question 5

What are the columns (vertical) called on the periodic table?

Answer 5

Groups or families

There are 18

Question 6

Where is the most reactive metal located on the periodic table?

Answer 6

At the bottom (the last) group

Of the alkali metals

Question 7

Where is the most reactive gas located on the periodic table?

Answer 7

On the top (the first) of the group

Of the halogens

Question 8

Are Nobel/inert gases non metals or metals?

Answer 8

Non metals, these gases are very un reactive

Question 9

What are 3 things that conduct electricity?

Answer 9

(All have to be in water)

1. Salt and water
2. Acid and water
3. Base and water

Question 10

Fossil fuels energy

Answer 10

~Non-Renewable

Produces a lot of pollution by releasing carbon dioxide in the atmosphere

Question 11

Uranium Nuclear energy

Answer 11

~Non-Renewable

Extremely dangerous and very toxic a small amount can produce a lot of energy

Question 12

Geothermal energy

Answer 12

~Renewable

Found below the lithosphere

Question 13

Hydroelectric electricity

Answer 13

~Renewable

The building of dams will often flood large areas, affecting various animals and plants

Question 14

Wave energy

Answer 14

~Renewable

Needs buoys that go up and down, does not pollute, not yet popular because it is expensive

Question 15

Tidal energy

Answer 15

~Renewable

Is due to the gravitational forces of the moon and sun,electricity can be generated by a 5 meter tide

Question 16

Wind energy

Answer 16

~Renewable

Cannot be stored, needs to be used with another type of energy, can be ugly and noisy

Question 17

Solar energy

Answer 17

~Renewable

Needs sunshine, can sometimes look ugly, does not pollute

Question 18

Mass is calculated in?

Answer 18

Grams

Question 19

Volume is calculated in?

Answer 19

Litres

Question 20

Concentration is calculated in?

Answer 20

Grams/Litre

Question 21

Formula for PPM

Answer 21

Mg/L (liquid) or Mg/Kg (Solid)

Question 22

Concentration (ppm)

Answer 22

Mass of solute (mg)/ volume of solution (ppm)

Question 23

Power source

Answer 23

Battery which is the power source, provides energy to the circuit

Question 24

Wires

Answer 24

Carries the current

Question 25

Ammeter

Answer 25

Measures the current intensity

Question 26

Resistor

Answer 26

Converts electrical energy into other forms of energy

Question 27

Light bulb

Answer 27

Component that generates light also a resistor

Question 28

Voltmeter

Answer 28

Mesures the voltage always on the outside of the circuit behind the resistor

Question 29

Switch

Answer 29

Controls the current, if switch is open then the circuit will not function

Question 30

Describe a series circuit

Answer 30

Elements are linked directly together from one end to another, follows the same pathway

Question 31

Describe a parallel circuit

Answer 31

Follows different pathways