C1 Atomic Structure/periodic Table

Question 1

What is an ion

Answer 1

A charged atom or molecule

Question 2

What is an isotope

Answer 2

Atoms with the same number of protons amd electrons but different amount of nuetrons

Question 3

What is an element

Answer 3

A substance made from only one type of atom

Question 4

What is a compound

Answer 4

A chemical substance made up of two or more different elements that are chemically bonded together

Question 5

How do you calculate mass number

Answer 5

Protons+nuetrons

Question 6

Why are atoms nuetrally charged

Answer 6

The number of protons (positively charged) and electrons (negatively charged) cancel out to become nuetraly charged

Question 7

What is the difference between a mixture and a compound

Answer 7

A mixture contains 2 or more different subastances that are only physically joined together whereas a compound is chemically bonded together

Question 8

What are the two types of ions

Answer 8

Cation (+)
Anion (-)

Question 9

What is a mixture

Answer 9

consists of two or more different substances, not chemically joined together.

Question 10

When is fractional distillation used

Answer 10

A fractional distillation is used when separating mixtures of liquids whose boiling points are similar

Question 11

What was the plum pudding model

Answer 11

negatively-charged electrons embedded within a positively-charged “soup.”

Question 12

What charge does protons neutrons and electrons have

Answer 12

Electrons- (-1)
Protons- (+1)
Neutrons- (0)

Question 13

What are the steps of fractional distillation

Answer 13

Evaporation: Crude oil is heated until it evaporates. Crude oil vapour is put into a fractionating column at the bottom and rises upwards.
Condensation: The temperature is highest at the bottom of the column. …
Collection: The fractions are collected.

Question 14

What does paper chromotagrophy do

Answer 14

Paper Chromatography is used to separate mixtures of soluble substances in a solution

Question 15

When was the plum pudding discovered and what was its idea

Answer 15

1897- the atom is a ball of charge with atoms scattered around it

Question 16

What are the 5 different models in order of oldest to newest

Answer 16

1.Daltons solid sphere model, 2. Thomsons plum-pudding model, 3. Rutherfords model, 4. Bohr model, 5. Quantum mechanical model

Question 17

Before the discovery of the subomatic particles what order did scuentists arange the elements of

Answer 17

Their atomic weight

Question 18

What do all elements in one group have in common

Answer 18

Number of electrons in the outer shell of the atom

Question 19

How are periods sorted

Answer 19

increasing of atomic number

Question 20

What charge is the nucleus and why

Answer 20

Positively charged because protons are positively chatged and nuetrons and neutrally charged

Question 21

Why do atoms have no charge

Answer 21

They have the same number of protons and electrons

Question 22

What does the atomic number tell you

Answer 22

How many protons/electrons there are

Question 23

What does the mass number tell you

Answer 23

Total number of protons and neutrons in the atom

Question 24

What are isotopes

Answer 24

Different forms of the same element. Theyll have the same atomic number as the original element but different mass numbers. For example carbons mass number is usually 12 but a common isotope would be cabon with a mass number of 13.

Question 25

How many atoms are there in Ca(OH)2

Answer 25

5 atoms

Question 26

Methane burns with oxygen making carbon dioxide and water. What is the word equation for this.

Answer 26

Methane + oxygen —> carbon dioxide + water

Question 27

What does filtration seperate

Answer 27

Insolube solids from liquids

Question 28

What dose solube mean

Answer 28

If a solid can be dissolved

Question 29

What is one method you can use to seperate a splube salt from a solution

Answer 29

Pour the solutuon into an evaporation dish
Slowly heat the dish with a bunsin burneeand the solution will become more concentrated
Keep heating until all you have left are dry crystals

Question 30

What was john daltons idea about atoms

Answer 30

19th centruy. He describes atoms as solid spheres and different spheres made up different elements

Question 31

What was J J thomsons idea about atoms

Answer 31

1897. Plum pudding model. Atoms werent solid spheres. Atoms have negative charged particles.

Question 32

How many electrons do group 0 elements have on the outer shell

Answer 32

8

Question 33

What were the two most obvious ways that elements were catogarised in the 1800s

Answer 33

Physical and chemical propeties
Atomic weight

Question 34

What are 3 physical properties of metals

Answer 34

Strong
Good conductor of heat
High boiling and melting points

Question 35

What are three physical factors of non metals

Answer 35

Dull
Low density
Bad conductor of electricity

Question 36

What was bohr’s discovery

Answer 36

Electrons exist in shells and orbit the nucleus in specific distances

Question 37

What wa the order of the discovery of the protons, neutrons and electrons

Answer 37

Electron, proton, neutron