1. ELEMENTS, MATTER SCIENTIFIC METHOD
UNIT 2 REVIEW
ELEMENTS, MATTER
SCIENTIFIC METHOD

2. ATOMS The number of Protons and Neutrons determine the atomic mass.
Number of Protons make up an atomic number.
Protons have a positive charge
Electrons have a negative charge
Neutrons have no charge (neutral)
Isotopes have same # of Protons, different #of Neutrons.
ATOMS

3. The most abundant element on Earth
Oxygen is the….

4. Ions and Ionic Bonds
ION
IONIC BONDS

5. Covalent Bonds

6. PH Scale

7. ACID (H+)
ACID- HYDRONIUM IONS
Examples of Acid

8. Base (OH-)
Hydroxide Ions
Examples of Bases

9. Molecules and Compounds
A molecule is the smallest particle of an element that still retains properties of that element.
A compound is made from 2 or more elements.

10. CHANGES IN STATE

11. PHASES AND BONDING

12. LIQUID PHASES
CONDENSATION
EVAPORATION

13. Scientific Method HYPOTHESIS EXPERIMENT
An “If” …..”then” statement based on what we infer or predict, based on observations.

14. SCIENTIFIC NOTATION

15. SHORT ANSWERS RESEARCH TONIGHT!: Know how to: Form a problem…
Why exactly does the Aluminum foil dissolve in Copper chloride?
Know how to: Form a problem…
Write a hypothesis
Design an experiment
What data to record
Variables