Atoms, molecules, elements, compounds, mixtures and solutions

Atoms, molecules, elements, compounds, mixtures and solutions

1. Atoms, Molecules , Elements, Compounds, Mixtures & Solutions!

2. ATOM The smallest building unit of matter which can’t be divided .

3. MOLECULE Made from more than one atom combined together.

4. Matter is divided into 4 groups *ELEMENTS *COMPOUNDS *MIXTURES *SOLUTIONS

5. ELEMENT Its molecule is made of the same type of atom combined together .

6. COMPOUND A kind of matter made of a chemical combination of two or more types of atoms. Every compound has a formula that shows how many atoms of each element are in the compound. For example, H 2 O

7. Let’s Build Some Molecules And Compounds ! This activity is for illustration only

8. Element Element Symbol Color of Gummy Hydrogen H yellow Carbon C green Oxygen O blue Silicon Si black Nitrogen N red

9. Hydrogen Gas H 2 Oxygen Gas O 2 Let's start with a couple of Molecules

10. Methane CH 4 Silicon Dioxide SiO 2 Ammonia NH 3 Propane C 3 H 8 Now for some compounds

11. What is the difference between a compound and a molecule? A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different types of atoms. All compounds are molecules but not all molecules are compounds.

12. Mixtures Most matter in the universe is found in mixtures. A mixture is made from two or more substances either elements, compounds or both - that are not chemically combined. Soil is a mixture The atmosphere is a mixture of gases

13. Is this a mixture? Why?

14. Can you do it yourself?

15. Here you go Atoms of an element Molecules of an element Molecules of a Compound Molecules of a Compound Molecules of a Compound Atoms of an element Mixture of 2 compounds Mixture of an element and a compound Mixture of 2 elements

16. Solutions A solution is a mixture in which one substance dissolves in another. For example salt water .

17. Which of the following is a solution?