Chemistry Exam - T3

Front 1

Proton

Back 1

Positively charged sub-atomic particle held within the centre of the atom called the nucleus.

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Neutron

Back 2

A neutrally charged sub-atomic particle held within the centre of the atom called the nucleus.

Front 3

Electron

Back 3

A negatively charged sub-atomic particle. Electrons move in regions outside the nucleus. They have energy and this energy will depend on how far away from the nucleus they are likely to be found.

Front 4

Nucleus

Back 4

The region within an atom where neutrons and protons are located. It is the centre of the atom. It is extremely dense and makes up the overall mass of the atom.

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Atom

Back 5

All matter is made up of particles called atoms. All atoms are neutral because they have the same number of protons and electrons.

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Ions

Back 6

When atoms lose or gain electrons they form charged particles called ions. Metal atoms will lose electrons and become positive ions.

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Cations

Back 7

Metal atoms that have lost electrons and developed a positive charge.

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Anions

Back 8

Non-metal atoms that have gained electrons and developed a negative charge.

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Elements

Back 9

Pure substances made up of only one type of atom. They cannot be broken down into anything simpler. Each element has its own unique atom.

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Compounds

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Pure substances made up of two or more different atoms of elements chemically combined. Compounds cannot be broken down by physical processes, but they can be chemically broken down into their individual elements.

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Mixtures

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Non-pure substances which are a physical combination of substances. These substances may be elements and compounds. Mixtures can be separated by physical processes like filtration, magnetism and distillation.

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Molecule

Back 12

When two or more atoms are chemically combined by sharing electrons. These two or more atoms may be the same or different. The important fact is that they share electrons.

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Valence electrons

Back 13

Electrons in the last energy level of an element.

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Ionic bond

Back 14

When metallic atoms combine with non-metallic atoms.

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Metallic bond

Back 15

When metal atoms combine to form a metallic lattice.

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Covalent bond

Back 16

When non-metallic atoms combine to form either molecules or covalent lattices.

Front 17

Isotopes

Back 17

Atoms of the same element, with different amounts of neutrons in the nucleus which gives atoms different masses.

Front 18

What is responsible for the chemical reactivity of an element?

Back 18

Electrons

Front 19

What do elements in the same groups on the periodic table share?

Back 19

The same number of valence electrons.

Front 20

Atomic number

Back 20

The number of protons in the nucleus of an atom of an element

Front 21

Mass number

Back 21

The total number of neutrons and protons in an atom of an element

Front 22

Where is the atomic number, element symbol and atomic mass?

Back 22

Front 23

What are the three ways atoms become stable?

Back 23

1. Giving electrons to another atom

2. Taking electrons from another atom

3. Sharing electrons with another atom

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Prefix - one

Back 24

Mono

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Prefix - two

Back 25

Di

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Prefix - three

Back 26

Tri

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Prefix - four

Back 27

Tetra

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Prefix - five

Back 28

Penta

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Prefix - six

Back 29

Hexa

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Prefix - seven

Back 30

Hepta

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Prefix - eight

Back 31

octo

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Prefix - nine

Back 32

nona

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Prefix - ten

Back 33

deca

Front 34

When should prefixes be used?

Back 34

For chemical equations of covalent compounds

Front 35

What do the roman numerals after transition metals show?

Back 35

The charge of the transition metal

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Combination reaction

Back 36

A reaction where two or more reactants combine to form one product.

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Decomposition reaction

Back 37

A reaction where one reactant produces two or more products

Front 38

Combustion reaction

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A reaction where an element or compound reacts with oxygen, often producing energy in the form of heat and light.

Front 39

Double replacement reaction

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A reaction involving an exchange of positive ions between two compounds. They often form a precipitate.

Front 40

Single replacement reaction

Back 40

A reaction in which one element replaces another in a compound. The element will only replace the other if it is more reactive.

Front 41

Signs a chemical reaction has taken place

Back 41

Change in temperature, change in colour, emission of gas, and a smell or odour.