1. 2.1 The Nature of Matter p34
Q: What three subatomic particles make up atoms? A: The subatomic particles that make up atoms are protons, neutrons, and electrons.

2. Atoms-basic unit of matter
Nucleus-center of the atom
Contains positive protons & neutral neutrons.
Electron-negatively
charged outside

3. Elements and Isotopes
Q: How are all of the isotopes of an element similar? A: Because they have the same number of electrons, all isotopes of an element have the same chemical properties.

4. Element-pure substance, one type of atom
Isotopes-same element, different # neutron
Radioactive Isotopes-nuclei unstable & break down.

5. Chemical Compounds
Q: In what way do compounds differ from their component elements?
A: The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
Compound-chemical combo of 2 elements ex: water

6. Chemical Bonds
Q: What are the main types of chemical bonds? A: The main types of chemical bonds are ionic bonds and covalent bonds.

7. Ionic Bonds-1 or more electrons transfered
Ions-+ and – charged atoms

8. Covalent Bonds-shared electrons
Molecule-smallest unit of a compound
Van der Waals Forces-attraction of oppositely charged regions of nearby molecules

9. WKBK pgs Read pg 16
Answer Questions 17-18