Chemistry elements compounds and mixtures

One type of atom bonded together

Element

Elements bonded together

Compounds

Elements/ compounds mixed together but not chemically bonded

Mixture

Vertical rows of the periodic table

Group

Horizontal rows of the periodic table

Period

The smallest particle of a chemical element

Atom

A group of two or more atoms bonded together

Molecule

A table with all the chemical elements

Periodic table

Artificially made

Synthetic

What you bond together to get a product

Reactants

The reactants bonded

Products

A symbolic representation of a chemical compound.

Formula

The process of using electricity to break down a compound into its elements.

Electrolysis

Not mixing/ reacting to water (insoluble)

Hydrophobic

Mixing/reacting with water (soluble)

Hydrophilic

Solid particles are closely packed together and vibrate in place

Describe solid particles

Gas atoms are far apart and move freely

Describe gas atoms

Liquid atoms are close together but can slide past each other, giving them no shape, but use a container to maintain their shape

Describe liquid atoms

An element is made up of only one type of atom

How many atoms does an element have

An atom is the smallest unit of matter

What is an atom

Atoms are the smallest units of elements, while molecules are formed when two or more atoms bond together

What is the difference between atoms and molecules

There are 118 known elements

How many element are in the periodic table

J and Q

Which two letters of the alphabet are not used in any of the chemical symbols

Sulphur as a solid is a bright yellow element, which floats in water. It is not magnetic

Describe Sulphur

By using a magnet to remove the iron from the sulphur

How could an iron and sulfur mixture be separated

Rocksalt, spatula, beaker, filter funnel, filter paper, conical flask, evaporating dish, bunsen burner, bench mat, tripod stand, pipe-clay triangle, lighter

What apparatus would you need to seperate rocksalt (salt and rock)

A separation technique that uses a filter to remove solid particles from a liquid or gas, allowing the liquid to pass through the fliter paper.

What is flitration

Easier to write and learn

Why do you think that chemists tend to use formula equations, rather than word equations

-ide

If only two elements have been bonded together what will the compound’s name end with

-ate or -ite

If the compound contains three elements and one of them is oxygen then what will the compound’s name end with

A word equation is a chemical reaction expressed using the names of the reactants and products instead of their chemical formulas

Explain what a word equation is

A formula equation is a chemical reaction represented by using the formulas of the reactants and products

Explain what a formula equation is

You look at the element you need to bond, such as O² . You will to see the number of valence electrons that element has. You will need to make a stable octet, which is 8 valence electrons. So our formula whould be 8-x to determine how many more electrons are needed for stability.

How do you tell using the periodic table the bonds needed to form an element, such as O² (oxygen)

Evaporation

Which technique could be used to separate a mixture of salt and water

A mixture is a combination of two or more substances that retain their individual properties and can be physically separated, while a compound is a substance formed when two or more elements chemically bonded together

Explain the difference between a mixture and a compound

The word 'electrolysis' comes from the Greek words 'electro', meaning 'electricity’ and 'lysis', meaning 'to break apart'. It refers to the process of using electricity to break down compounds back into their elements

What is the word history for Electrolysis

It produces copper metal and chlorine gas

What happens if you use electrolysis to break up a compound of copper chloride

Solid, generally sliver/ grey in colour/ shiny

Based on their appearance do the metals have anything in common with each other?

There is more variety to their appearance

Based on their appearance do the non-metals have anything in common with each other?