Chemistry

Question 1

What are the three states of matter?

Answer 1

Solid, Liquid, Gas

Question 2

What is the shape and volume in a solid like?

Answer 2

Shape stays the same.
Volume stays the same.

Question 3

What is the shape and volume in a Liquid like?

Answer 3

Shape can change
Volume stays the same.

Question 4

What is the shape and volume in a gas like?

Answer 4

Shape can change
Volume can change

Question 5

What are the particles in a solid like?

Answer 5

Particles are packed tightly together in rows. They can vibrate but not move.

Question 6

What are the particles in a liquid like?

Answer 6

Particles are close together but can move freely.

Question 7

What are the particles in a gas like?

Answer 7

Particles in a gas are far apart and they move quickly.

Question 8

What are the three particles of an atom?

Answer 8

Protons, neutrons, and elctrons

Question 9

What is the shell?

Answer 9

Outer part of the atom

Question 10

What is the nucleus?

Answer 10

Is the protons and neutrons inside of the atom

Question 11

What is the electrons?

Answer 11

Is negatively charged and exists on the shell.

Question 12

What is the neutrons?

Answer 12

They are neutral and is next to the protons on the inside of the atom. Part of the nucleus.

Question 13

What is the protons?

Answer 13

Protons are positively charged and is part of the nucleus.`

Question 14

Can the number of protons, neutrons and elctrons vary?

Answer 14

Yes as this is what makes elements different from each other.

Question 15

What does the atomic number equal?

Answer 15

Number of protons

Question 16

What two things does the number of protons equal?

Answer 16

Atomic number and number of electons

Question 17

How do you find the number of neutrons?

Answer 17

Mass number- number of protons.

Question 18

What is the gas test for oxygen?

Answer 18

The test for oxygen is whether it relights a glowing splint.

Question 19

What is the gas test for hydrogen?

Answer 19

Hydrogen explodes with a pop when it is tested with a lit splint.

Question 20

What is the test for carbon dioxide?

Answer 20

Turns lime water cloudy.

Question 21

Where is carbon found?

Answer 21

In all living things, ocean, air, rocks.

Question 22

Does carbon stay in the same place? if not why?

Answer 22

Carbon dioxide is incorporated into living tissue through photosynthesis and it is returned to the atmosphere through resperation, the decay of dead organisms and the burning of fossil fuels.

Question 23

What is the balance of gases in the air?

Answer 23

Made up of different gases but mostly nitrogen.

Question 24

What does the air contain

Answer 24

78% nitrogen
21% oxygen
0.9% argon
0.04% carbon dioxide

Question 25

What is experiment to find out what percentage of the air is oxygen?

Answer 25

Full a plate up with water. Put a lit candle in the water. Place a jar over in but not fully down so the water can enter. Make a mark where the candle is when you start and once the candle has gone out make another mark. the percentage of oxygen in the air = change in water level divided by the height of jar times a 100.