C1- Atomic Structure And The Periodic Table

Question 1

Element

Answer 1

An element cannot be broken down chemically into any simpler substance

Question 2

Compound

Answer 2

A compound is a group of 2 or more different types of atoms chemically bonded together.

Question 3

Mixture

Answer 3

A mixture is made up of 2 or more substances (elements or compounds) that are not chemically bonded.

Question 4

Reactant

Answer 4

A reactant is a substance that we start with before a chemical reaction.

Question 5

Product

Answer 5

A product is a substance made as a result of a chemical reaction.

Question 6

Oxidation

Answer 6

Loss of electrons

Question 7

Reduction

Answer 7

Gain of electrons

Question 8

How are mixtures separated?

Answer 8

Through physical processes:
Filtration, simple distillation, fractional distillation, chromatography.

Question 9

Fractional distillation

Answer 9

Separating liquids from a mixture of liquids by boiling off the substances at different temperatures, then condensing and collecting the liquids.

Question 10

Chromatography

Answer 10

Where small amounts of distilled substances are separated by running a solvent along a material.

Question 11

Mobile phase

Answer 11

Solvent

Question 12

Stationary phase

Answer 12

Paper

Question 13

Rf equation

Answer 13

Rf= distance moved by substance/ distance moved by solvent

Question 14

Isotope

Answer 14

An atom that has the same number of protons but a different number of neutrons.

Question 15

Metals form

Answer 15

Positive ions

Question 16

Non-metals form

Answer 16

Negative ions