Elements and Compounds vocab

Question 1

Proton

Answer 1

Positive charge within an atom

Question 2

Neutron

Answer 2

No charge within an atom

Question 3

Electron

Answer 3

Negative charge within an atome

Question 4

Atomic number shown the amount of…

Answer 4

Protons or electrons there are

Question 5

The atomic mass shows…

Answer 5

How many protons and neutrons there are

Question 6

Metals on the _____ of the periodic table

Answer 6

Left

Question 7

Non metals on the _____ of the periodic table

Answer 7

Right

Question 8

Metalloids are in between the _______ and _______ in the periodic table

Answer 8

Metal and nonmetal (anyway round is fine)

Question 9

Atomism was researched by…

Answer 9

Democritus

Question 10

The solid sphere model was researched by…

Answer 10

John Dalton

Question 11

The plum pudding model was researched by…

Answer 11

J.J Thompson

Question 12

The nuclear model was researched by…

Answer 12

Earnest Rutherford

Question 13

The planetary model was researched by…

Answer 13

Neils Bohr

Question 14

The quantum model was researched by…

Answer 14

Erwin Schrödinger

Question 15

Iron (Fe) + Sulphur (S) = ?

Answer 15

Iron sulfide or FeS

Question 16

Sodium (Na) + Chlorine (Cl) = ? (Remember chlorine travels in a pair)

Answer 16

Sodium chloride or 2NaCl

Question 17

Element

Answer 17

A substance made of only one type of atom

Question 18

Compound

Answer 18

Two or more atoms chemically bonded together

Question 19

Pure substances

Answer 19

Substances that contain only one element OR compound

Question 20

Mixture of substances

Answer 20

More than one type of element and/or compound

Question 21

The standard test for chlorine (Cl) is…

Answer 21

Dipping blue litmus paper and see if it changes colour (blue to pink to white)

Question 22

The standard test for air and the result is…

Answer 22

Dipping a lit or glowing splint into air and it will go out

Question 23

Standard test for oxygen (O) and the result with a lit splint is…

Answer 23

Dipping a lit splint into oxygen and it should glow brighter

Question 24

What happens when you put a lit splint into a test tube containing hydrogen (H)?

Answer 24

It makes a squeaky pop

Question 25

Briefly describe the principles behind the can crush experiment (give four points)

Answer 25

1. An empty can can retain its shape as the air pressure inside and out is equal 2. The water turns to water vapour when heated and pushes the air out 3. The vapour turns back to water when cooled down which takes a lot less space 4. There is no air inside the can, so the air pressure outside is stronger than inside, so to can crushes

Question 26

Briefly describe the principles behind the tea light, glass jar and water experiment (give three points)

Answer 26

1. When tea light goes out, there is no more oxygen 2. If there is no more oxygen, the air pressure inside the jar in less dense than outside the jar 3. The water has to increase to push all the air particles together to make it denser and the same as outside the jar

Question 27

The standard test for carbon dioxide and the result is…

Answer 27

Mixing carbon dioxide with lime water and it should turn a into a cloudy, milky liquid