Question 1

Why were early periodic tables incomplete?

Accepted Answer

many elements were unknown and some were placed in incorrect groups

Answer

elements were left out so they could be arranged alphabetically

Question 2

What was the order of Mendeleev's periodic table?

Accepted Answer

atomic weight

Answer

atomic number

Answer

atomic mass

Answer

electron number

Question 3

How did Mendeleev arrange his elements?

Accepted Answer

He left gaps for undiscovered elements and he arranged elements due to their similar chemical properties

Answer

By looking at chemical experiments of everything

Question 4

What is an isotope?

Accepted Answer

an isotope is a version of an element with the same atomic number so the same number of protons and electrons but a different mass number because of a different number of neutrons

Answer

an isotope has the same mass number but different atomic number

Question 5

What is the order of the modern periodic table?

Accepted Answer

Increasing atomic number

Answer

increasing atomic weight

Question 6

What are the columns in the periodic table called?

Accepted Answer

groups

Answer

families

Question 7

what is the name of group 7?

Accepted Answer

the halogens

Answer

the alkali metals

Answer

the noble gase

Answer

the transition metals

Question 8

what is the name of group 1?

Accepted Answer

the alkali metals

Answer

the noble gases

Answer

the halogens

Answer

the alkali earth metals

Question 9

what is the name of group 0?

Accepted Answer

the noble gases

Answer

the alkali metals

Answer

the halogens

Answer

the transition metals

Question 10

What are the rows in the periodic table called?

Accepted Answer

periods

Answer

sections

Question 11

What is the same about each of the elements in a group?

Accepted Answer

the number of electrons in the outer shell

Answer

the number of shells in an atom

Question 12

what type of substance is listed in the periodic table?

Accepted Answer

elements

Answer

compounds

Answer

mixtures

Answer

alloys

Question 13

what is the maximum number of electrons that can be held in the first shell of an atom?

Accepted Answer

2

Answer

6

Answer

4

Answer

8

Question 14

What is the maximum number of electrons that can be held in every shell after the first shell?

Accepted Answer

8

Answer

2

Answer

6

Answer

4

Question 15

How do you work out the number of electrons on an atom?

Accepted Answer

You look at the atomic number which is the smallest number in the box in the periodic table.

Answer

You look at the mass number which is the massive number in the box in the periodic table

Question 16

If an electronic structure is written as 2,8,2 how many electrons does it have in total?

Accepted Answer

12

Answer

10

Answer

2

Question 17

What is the number of shells in an atom the same as in the periodic table?

Accepted Answer

period number

Answer

group number

Question 18

what is the number of electrons in the outer shell the same as in the periodic table?

Accepted Answer

group number

Answer

shell number

Question 19

what is the number of electrons in the atom equal to in the periodic table?

Accepted Answer

the atomic number

Answer

the mass number

Question 20

Which side of the periodic table displays the non-metals?

Accepted Answer

right

Answer

left

Question 21

Which side of the periodic table displays the metals?

Accepted Answer

left

Answer

right

Question 22

What happens to metal atoms when they form ions?

Accepted Answer

they give away electrons and form positive ions

Answer

they take electrons and form form positive ions

Question 23

what happens to non-metal atoms when they form ions?

Accepted Answer

they add electrons to form negative ions

Answer

they remove electrons to form negative ions

Question 24

How many electrons were lost as this atom turns into an ion?

Accepted Answer

1

Answer

2

Question 25

Which property listed below is NOT a property of metals

Accepted Answer

dull

Answer

good conductor of heat

Answer

shiny

Answer

malleable

Question 26

Name the highlighted group

Accepted Answer

The noble gases

Answer

the halogens

Question 27

What happens to the boiling point of the gases as you go down group 0?

Accepted Answer

It increases, as the atoms get larger the intermolecular forces get stronger and more energy is needed to break these forces

Answer

It decrease, as the atoms get larger the intermolecular forces get stronger and more energy is needed to break these forces

Question 28

What does inert mean?

Accepted Answer

unreactive

Answer

upside down

Question 29

Why are group 0 unreactive (inert) ?

Accepted Answer

they have a full outer shell and a stable arrangement of electrons

Answer

they can't react

Question 30

Select the property that is NOT one of a group 1 metal

Accepted Answer

very dense

Answer

low density

Answer

soft metals can easily be cut with a knife

Answer

low melting points

Question 31

Complete the equation that shows lithium reacting with water: Lithium + water --> Lithium hydroxide + _________________?

Accepted Answer

hydrogen

Answer

carbon dioxide

Answer

oxygen

Answer

methane

Question 32

Which observation would you NOT see when alkali metals react with water?

Accepted Answer

red colour as the sodium hydroxide is acidic

Answer

the metals float as they have low density

Answer

purple colour as the sodium hydroxide is alkaline

Answer

the metal potassium is most reactive so gives a lilac flame

Question 33

what is the reaction with sodium plus oxygen?

Accepted Answer

sodium + oxygen --> sodium oxide

Answer

sodium + oxygen --> sodium dioxide

Question 34

Explain the increase in reactivity as you go down group 1

Accepted Answer

the atoms get larger, the nucleus and the outer electron get further away from each other, the force of attraction between them weakens and then the outer electron is lost

Answer

the atoms get smaller, the nucleus and the outer electron get further away from each other, the force of attraction between them weakens and then the outer electron is lost

Question 35

Select the statement that is NOT true of a group 7 halogen

Accepted Answer

between each halogen molecule is a covalent bond

Answer

they can form negative ions with metals

Answer

between each atom in a halogen molecule is a covalent bond

Answer

they exist as simple covalent molecules when joined with other halogen atoms

Question 36

what is the appearance of bromine?

Accepted Answer

brown liquid

Answer

pale green gas

Question 37

what is the appearance of chlorine?

Accepted Answer

pale green gas

Answer

brown liquid

Question 38

what happens to the melting point of group 7 as you go down the group?

Accepted Answer

increases

Answer

decreases

Question 39

which statement does NOT explain why group 7 increases in melting and boiling points going down the group?

Accepted Answer

the molecules become smaller

Answer

the molecules become larger

Answer

the intermolecular forces become stronger

Answer

more energy is needed to overcome those forces

Question 40

what is the test for chlorine gas?

Accepted Answer

damp blue litmus paper turning white

Question 41

what is a displacement reaction?

Accepted Answer

a reaction where a more reactive substance displaces a less reactive one from it's compound

Answer

a reaction where everything will swap places

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