​​honey

​

cola

​

​strawberry jam

​

​​honey

​

cola

​

​strawberry jam

​

​All three materials have similarities but also differences in their "properties". The properties of matter help us distinguish which is which.

The material that forms the observable universe.

The interaction of energy and matter cause everything.

The smallest particles we know (leptons and quarks) form protons, and together with electrons, they form atoms.​

​Matter

Pure substance - matter which is made up of only one atom or molecule.

Mixture - two or more pure substances which are mixed together but each substance is unchanged.​

​Mixtures and Pure Substances

​Gold is a pure substance made up of one element

Salt is a pure substance made of one kind of molecule (Sodium + Chorine)

Lemonade is a mixture of lemon juice, water, and sugar

The types of matter may be organized in the way shown in this chart.

We can identify matter based on their properties.

We need to identify the properties so we can safely make use of them.​

​

Properties of Matter

" You may check the liquid's smell or taste to identify it." 

Physical properties - they can be observed without changing the composition.

Chemical properties - describes the ability of a substance to undergo a chemical reaction.​

​

Properties of Matter

You may cut or fold paper, but it's still paper. This shows its physical properties.

When you burn paper, it changes to ash. This shows its chemical properties.