1. Matter & Energy
Ch. 1 Outline

2. 1.1 Matter has mass and volume.
Matter – anything that has mass and takes up space
Mass – the amount of matter in an object
Weight – the downward pull of gravity on an object

3. 1.1 Continued Volume – the amount of space an object takes up
Examples of matter –
Examples of non-matter –

4. 1.2 Matter is made of atoms. Atom – smallest basic unit of matter
Subatomic particles – smaller particles that make up an atom; protons, neutrons, and electrons
Nucleus – the center of the atom; contains protons and neutrons

5. 1.2 Continued
Proton – a positively charged particle found in the nucleus
Neutron – a particle found in the nucleus that has no charge
Electron – a negatively charged particle found outside the nucleus

6. 1.2 Continued
6. Drawing of an atom –

7. 1.2 Continued B. Molecule – when two or more atoms combine together
1. A molecule can be made by combining alike or different atoms.
2. A molecule is the smallest amount of a substance made of combined atoms that is considered to be that substance.

8. Section 1.3 Pure substance – has only one type of substance
Element – substance that contains only a single type of atom
Periodic table – organized list of the elements
1. Mendeleev and Moseley were the two scientists who were involved in creating the modern periodic table.

9. 1.3 Continued
Chemical Symbol – shorthand way of representing the elements; only one or two letters
Atomic number – number of protons
Compound – substance that consists of two or more different types of atoms bonded together

10. 1.3 Continued
Mixture – combination of different substances that remain the same individual substances
1. heterogeneous – have different properties in different areas
2. homogeneous – evenly distributed; the same throughout

11. 1.3 Continued Mixture Compound Substances Remain the same
New substance formed
Separation
By physical means
Breaking bonds
Proportions
Vary
Fixed