AQA AS Unit 1 Key Definitions

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Created by: ailisshhh
Created on: 06-03-14 21:22

The number of protons in an atom

atomic number

1 of 15

The number of protons and neutrons in an atom

mass number

2 of 15

Atoms of the same element with the same number of protons but a different number of neutrons

isotope

3 of 15

The energy taken to remove 1 mole of electrons from one mole of atoms in the gaseous state

ionisation energy

4 of 15

The simplest ratio of elements in a compound

empirical formula

5 of 15

The proportion of reactants converted into useful products rather than waste products

atom economy

6 of 15

The average mass of an atom of an element relative to 1/12th the mass of an atom of carbon-12

relative atomic mass

7 of 15

The number of atoms in a 12g sample of carbon-12

avagadro constant

8 of 15

A free moving electron is said to be

delocalised

9 of 15

The power of an atom to attract the electron density in a covelant bond towards itself

electronegativity

10 of 15

The unequal sharing of electrons between covelantly bonded atoms

polarity

11 of 15

A portion of a molecule that is a recognised group of bound atoms

functional group

12 of 15

The forces which attract molecules together

intermolecular forces

13 of 15

Molecules with the same molecular formula, but a different structural formula

isomer

14 of 15

Larger molecule fractions are broken down into smaller molecules

cracking

15 of 15

Other cards in this set

Card 2

Front

The number of protons and neutrons in an atom

Back

mass number

Card 3

Front

Atoms of the same element with the same number of protons but a different number of neutrons

Back

Card 4

Front

The energy taken to remove 1 mole of electrons from one mole of atoms in the gaseous state

Back

Card 5

Front

The simplest ratio of elements in a compound

Back

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AQA AS Unit 1 Key Definitions