Unit 2
Understanding Matter

Should Knows

Define: Matter, mass, weight, homogeneous mixture, heterogeneous mixture

Should Do's
1.Distinguish between mass and weight.
2.Apply the law of conservation of matter.
3.Classify matter as an element, compound,homogeneous mixture, or heterogeneous mixturewith regard to its physical state and composition.

Vocabulary

Should Knows: Define: proton, neutron, electron, isotope, atomic mass, atomic number, cation, anion

Should Do's:

!. Write and interpret symbols that depict the atomic number, mass number, and charge of an atom or ion 2. Define the atomic mass unit and average atomic mass. 3. Calculate average atomic mass and isotopic abundance. 4. Differentiate between cations and anions. 5. Explain why isotopes are scientifically important.

Subtopic

What is Matter?

How is are mass and weight different?

What are the different States of Matter?

What are the different Types of Matter?

ATOMIC MASS: is the equal number of protons and neutrons

Hydrogen: ONLY HAS ELECTRONS AND PROTONS

Atomic Number: number of protons

Atomic Structure

Number of Neutrons = THE ATOMIC MASS

ATOM IS NOT A CIRCLE (ALWAYS MOVING)

PROTONS + ELECTRONS

What is an Isotope: Isotopes same element (atoms) with a different atomic mass (different number of neutrons)

Two Types of Ion