Physical Science EOG Review

Atoms

100

Smallest particle of and element that still retains the properties of that element

Atom

200

What 3 subatomic particles are in an atom?

proton, neutron, electron

300

What are the charges for each subatomic particle?

Proton positive, Electron negative, Neutron neutral

400

Which two particles make up the mass of the nucleus?

Protons and neutrons

500

What determines the atomic number?

The number of protons

Matter

100

All matter can be divided into two types of substances.  What are they?

Pure substances or Mixtures

200

Give an example of a pure substance

Element, Compound

300

What are the two types of mixtures?

Homogeneous, Heterogeneous

400

Name an element

Answers will vary

500

Give an example of a compound

Answers will vary glucose, water, table salt

It's Periodic

100

How are elements on the Periodic Table arranged?

By increasing atomic number

200

What are the vertical columns called and how many are there?

Groups/Families - 18

300

What are the horizontal rows called and how many?

Periods - 7

400

Which element has 3 energy levels and 1 valence electron?

Na (Sodium)

500

Name 3 properties of metals and 3 properties of nonmetals

Answers will vary; Metals are ductile, malleable, shiny and good conductors, Nonmetals are brittle, dull, poor conductors of heat and electricity

Reactivity

100

What is the most reactive Group of elements?

Group 1 Alkali Metals

200

What is the most reactive group of NONMETALS and with which Group do they readily react?

Halogens  - React with Group 1 Alkali Metals

300

How does reactivity change as you move DOWN Group 1?

Becomes MORE reactive

400

How does reactivity change in metals as you move ACROSS a PERIOD from left to right?

Metals become LESS reactive as you move from left to right across a period.

Group 1 > Group 2> Transition Metals > Poor Metals > Metalloids

500

What is responsible for the reactivity of elements?

Valence electrons

Counting Atoms

100

Small number to the lower right of an element symbol

Subscript

200

Large number in front of a molecular formula

Coefficient

300

State the Law of Conservation of Matter

In a closed system, the mass of the reactants must equal the mass of the products

400

How many elements are in Al₂SO_4?

How many atoms?

3 elements (Al, S, O)

7 atoms

500

Is the following equation balanced?  Show tally on dry-erase board.

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.

Yes. 

3 Carbon, 8 Hydrogen, and 10 Oxygen