Chemistry

Question 1

Name, a group of metals

Answer 1

Alkali metals

Question 2

How does carbon dioxide get in the air?

Answer 2

Burning fossil fuels

Question 3

Where does sulphur dioxide get in the air from?

Answer 3

From power stations

Question 4

How do nitrogen oxides get in the air?

Answer 4

From sparkling air in engines

Question 5

What are the three things that are highly damaged by acid rain

Answer 5

Buildings
Steel Structures
Plants & Fish

Question 6

A substance that neutralises acid is a

Answer 6

Base

Question 7

A base is a

Answer 7

Substance that neutralises acid

Question 8

A soluable base is an

Answer 8

Alkali

Question 9

All bases are metal compounds except

Answer 9

Ammonia

Question 10

Are all bases except one:
Metals
Or
Non-Metals

Answer 10

Metals

Question 11

Acid + Metal Oxide=

Answer 11

Salt Water

Question 12

Acid + Metal Carbonate=

Answer 12

Salt + Water + Carbon Dioxide

Question 13

Acid + Reactive Metal=

Answer 13

Salt + Hydrogen

Question 14

What are Titrations

Answer 14

A titration is an experiment carried out using a pipette or burette to find out what volume acid will neutralise a certain amount of alkali

Question 15

What’s used to detect the end point of the reaction?

Answer 15

An indicator

Question 15

What does the pH scale measure?

Answer 15

It measures how acidic or alkaline something is

Question 16

P acid V acid C acid =

Answer 16

P alkali V alkali C alkali

Question 17

pH < 7=

Answer 17

Acidic ( more H+ ions)

Question 18

pH 7=

Answer 18

Neutral (equal amounts of H+ & OH-)

Question 18

pH > 7=

Answer 18

Alkaline (more OH- ions)

Question 19

Does diluting an acid or an alkaline move it:
A. Closer to pH 7
B. Away from pH 7

Answer 19

A. Closer to pH 7

Question 20

What can you do to make an acid/ alkaline move closer to pH 7?

Answer 20

Dilute it

Question 21

What ions do Acids contain?

Answer 21

Hydrogen (H+) ions

Question 22

Do Acids contain Metals or Non-Metals?

Answer 22

Non-Metals

Question 22

Do Alkalis contain Metals or Non-Metals?

Answer 22

Metals

Question 23

Acid + Alkali =

Answer 23

Salt + Water

Question 24

What ions do Alkalis contain?

Answer 24

Hydroxide (OH-) ions (or ammonium)

Question 25

Acid + Alkali = Salt + Water is a ………….. reaction

Answer 25

Neutralisation

Question 26

List 4 factors which increase the speed of a chemical reaction

Answer 26

Temp. Concentration Presence of a catalyst Particle size

Question 26

How do you calculate average rate of reaction?

Answer 26

Find the change in concentration

Question 27

In a reaction the volume increased from 20cm3 to 80cm3 in 200 seconds. What was the average rate of reaction?

Answer 27

80-20 = 60 ——————————— 200 —— = 6.6cm3-s-1 60

Question 27

State the name of one group of elements

Answer 27

Alkali Metals

Question 28

What’s the electron arrangement for Oxygen

Answer 28

2, 6

Question 29

What’s the electron arrangement for Sodium

Answer 29

2, 8, 1

Question 30

State what’s meant by ionic bonds

Answer 30

When two ions connect (a negatively charged non-metal + a positively charged metal)

Question 31

Explain fully why atoms form ions

Answer 31

To create stable atoms. Ions become stable by bonding with an oppositely charged atom or compound in a chemical reaction

Question 32

Which of the following substances contain ionic bonds? H20; H2; NaCl; NH3; MgCl2; FeF2; CaO; PCl3; CH4

Answer 32

NaCl; MgCl2; FeF2; CaO

Question 33

Explain what’s meant by an ion (electric)

Answer 33

An ion is an atom or a group of atoms that has an electric charge

Question 34

Explain fully, what is meant by ionic bonding (opposites attract)

Answer 34

Ionic bonding is a strong electrostatic force of attraction between oppositely charged ions

Question 35

Explain fully, what is meant by ionic compounds

Answer 35

Ionic compounds are compounds made up of ions that form charged particles when an atom (or a group of atoms) gain or lose electrons

Question 36

What are catalysts?

Answer 36

Catalysts are substances that speed up chemical reactions but can be recovered chemically unchanged at the end of the reaction.

Question 37

The average rate of a chemical reaction can be calculated, with appropriate units, using the equation:

Answer 37

quantity rate= ———— time

Question 38

What are groups in the periodic table?

Answer 38

Groups are columns in the Periodic Table containing elements with the same number of outer electrons, indicated by the group number.

Question 39

How do you find out the protons in an atom?

Answer 39

The number of protons in an atom is given by the atomic number.

Question 40

How do we find out the neutrons in an atom

Answer 40

The mass number of an atom is equal to the number of protons added to the number of neutrons.

Question 41

What are isotopes?

Answer 41

Isotopes are defined as atoms with the same atomic number but different mass numbers, or as atoms with the same number of protons but different numbers of neutrons.

Question 42

What is nuclear notation?

Answer 42

Nuclide notation is used to show the atomic number, mass number (and charge) of atoms (ions) from which the number of protons, electrons and neutrons can be determined.

Question 43

g

Answer 43

g

Question 44

What are covalent bonds?

Answer 44

Covalent bonds form between non-metal atoms. A covalent bond forms when two positive nuclei are held together by their common attraction for a shared pair of electrons.

Question 45

What charge is the nucleus of an atom?

Answer 45

Positive

Question 46

What’s the name of group 1 in the periodic table

Answer 46

Alkali Metals

Question 47

What’s the name of Group 2 in the periodic table

Answer 47

Alkali Earth Metals

Question 48

What’s the name of Group 4, 5 & 6in the periodic table

Answer 48

Transition Metals

Question 49

What’s the name of Group 7 in the periodic table

Answer 49

Halogen

Question 50

What’s the name of Group 8 in the periodic table

Answer 50

Nobel Gasses