C1 Atomic Structure

Question 1

Aqueous solution

Answer 1

The mixture made by adding a soluble substance to water

Question 2

Atom

Answer 2

The smallest part Of an element that can still be recognised as that element

Question 3

Atomic numbee

Answer 3

The number of protons (which equals the number of electrons) in an atom. It is somethimes called the proton number

Question 4

Balanced symbol equation

Answer 4

A symbol equation in which there are equal numbers of each type of atom on either side of the equation

Question 5

Biofuel

Answer 5

Fuel made from animal or plant products

Question 6

Chromatography

Answer 6

The process whereby small amounts of dissolved substances are spereatwd by running a solvent along a material such as absorbent paper

Question 7

Compound

Answer 7

A substance made when two or more elements are chemically bonded together

Question 8

Electron

Answer 8

A tiny particle with a negative charge. Electrons orbit the nucleus of atoms or ions in shells

Question 9

Electronic structure

Answer 9

A set of numbers to show the arrangement of electrons in their shells

Question 10

Group

Answer 10

All the elements in the columns labelled0 to 7 in the periodic table

Question 11

Ion

Answer 11

A charged particle produced by the loss or gain of electrons

Question 12

Isotope

Answer 12

atoms that have the same number of protons but different number of neutrons, i.e., they have the same atomic number but different mass numbers

Question 13

Law of conservation of mass

Answer 13

the total mass of the products formed in a reaction is equal to the total mass of the reactants

Question 14

Mass number

Answer 14

The number of protons plus neutrons in the nucleus of an atom

Question 15

Neutron

Answer 15

A dense particle found the in the nucleus of an atom
It is neutral carrying no charge

Question 16

Noble gases

Answer 16

The very unreactive gases found in group 0 of the periodic table. Their atoms have very stable electronic structures

Question 17

Nucleus

Answer 17

Very small and dense part of an atom that contains protons and neutrons

Question 18

Periodic table

Answer 18

An arrangement of elements in the order of their atomic numbers forming groups and periods

Question 19

Product

Answer 19

A substance made as a result of a chemical reaction

Question 20

Proton

Answer 20

A tiny positive particle found inside the nucleus of an atom

Question 21

Reactant

Answer 21

A substance we start eith before a chemical readtion takes place

Question 22

Shell

Answer 22

An area in an atom, around its nucleus, where electrons are found

Question 23

State symbol

Answer 23

The abbreviations used in balanced symbol equations to show if reactants and products are solids liquid gases or dissolved in water

Question 24

Symbol equation

Answer 24

an equation that helps you see how much of each substance is involved in a chemical reaction by showing the chemical symbols and formulae of all the reactants and products involved

Question 25

Word equation

Answer 25

A way of describinf what happens in a chemical reaction by showing the names of all reactants and the products they form