Acids and Bases

?
  • Created by: alana
  • Created on: 10-11-12 02:52
What is an electron
A negatively charged component of an atom, surrounding the atoms nucleus
1 of 22
What is a proton
Component of the nucleus with a relative mass number of 1 and charge of +1
2 of 22
What is a neutron
A component of the nucleus with a relative mass number of 1 and no charge
3 of 22
What is a nucleus
The centre of an atom composed of protons and neutrons, possessing 99.9% of the mass
4 of 22
What is the atomic number
The number of protons in the nucleus of an atom. Places it on the periodic table
5 of 22
What is the atomic mass
The total number of protons and neutrons in the nucleus
6 of 22
What is a compound
A substance composed of two or more elements
7 of 22
Element
A class of substances that cannot be seperated into simpler substances by chemical means
8 of 22
Ion
An electrically charged atom, or goup of atoms formed by the loss or gain of one or more electrons
9 of 22
What is a cation
A positively charged atom or group of atoms caused by an atom or group of atoms losing one or more electrons
10 of 22
What is an Anion
A negatively charged atom or group of atoms caused by losing one or more electrons
11 of 22
What is an Isotope
atoms of the same element that have the same atomic number but different atomic mass (no. of neutrons)
12 of 22
What is a particle
one of the extremely small constituents of matter. e.g. atoms molecules ions common particles
13 of 22
What is Particle Theory
The theory that matter is made up of tiny particles which are constantly moving
14 of 22
What is collision theory
The theory that in order for a chemical reaction to occur two or more particles must collide with sufficient energy and at the correct orientation
15 of 22
What is concentration
is the measure of how much there is of a given substance
16 of 22
What is surface area
Total area of exposed surfaces
17 of 22
What is Kinetic Energy
energy that an object possesses by being in motion
18 of 22
Reaction Rate
a measure of how fast reactants become products
19 of 22
What is a catalyst?
a substance that speeds up a chemical reaction but is not used up in that reaction
20 of 22
What is activation energy?
least amount of energy required to start a chemical reaction
21 of 22
What is an atom?
is the defining structure of an element. cannot be broken by any chemical means
22 of 22

Other cards in this set

Card 2

Front

What is a proton

Back

Component of the nucleus with a relative mass number of 1 and charge of +1

Card 3

Front

What is a neutron

Back

Preview of the front of card 3

Card 4

Front

What is a nucleus

Back

Preview of the front of card 4

Card 5

Front

What is the atomic number

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Science resources:

See all Science resources »