Chemistry Final Review

Definitions

100

What is a positively charged subatomic particle callled?

Proton

200

The substances you end up with are the __________.

Products

300

Indicates the relative numbers of atoms of each kind in a chemical compound by using atomic symbols and numerical subscripts.

Chemical Formula

400

The substances you start with are the __________.

Reactants

500

A list of elements organized according to the ease with which the elements undergo certain chemical reactions. Useful for displacement reactions.

Activity Series

Recall

100

In the phrase "Have No Fear of Ice Cold Beer" for the diatomic 7 what does Fear stand for?

Flurine (or F₂ Fluoride)

200

If there isn't a number before or after an element how many are there? Ex H₂O how many Oxygen?

1

300

What is the name for electrons located in the outermost energy shell of an atom? They tell us if an element is willing to bond or receive/transfer electrons.

Valence Electrons

400

What is the name of this compound NO₃^-?

Nitrate

500

What are the 5 types of chemical reactions?

Synthesis, Decomposition, Single Displacement, Double Displacement, Combustion

Balancing

100

True or False: when I know the reactants and products I can change the subscripts (little numbers next to .

False: when reactants and products are known I can only changed the coefficients (big numbers in front).

200

Is this equation balanced? CaO + CO₂ → CaCO₃ 

Yes

300

If given an equation with Carbon, Oxygen, and Hydrogen what element should be balanced first?

Carbon

400

What type of reaction is this? 

C₄H₁₀ + O₂ → CO₂ + H₂O 

Combustion

500

In what kind of reaction do we use the criss cross method to get subscripts from charges?

Synthesis

Periodic Table

100

Which element has only 1 electron?

Hydrogen

200

What is the name of the element with the chemical symbol Cr?

Chromium

300

How many valence electrons are in Calcium, Magnesium, and Barium?

2

400

What element has the Noble Gas Notation [Ne]3s²3p²?

Silicon (count the total number of electrons).

500

List the Noble Gases from largest (# of -e) to smallest (# of -e).

Radon, Xenon, Krypton, Argon, Neon, Helium

Rn > Xe > Kr > Ar > Ne > He

Random

100

In a chemical equations what does (g), (l), and (s) represent? 

The phase the material is in gas, liquid, solid.

200

What is the atomic weight of Chlorine with 3 sig figs after the decimal?

35.453 amu (atomic mass units)

300

What type of reaction is this? BaCl₂ + Na₂SO₄ →NaCl + BaSO₄

Double Displacement

400

What is the name of the law that states matter cannot be created or destroyed?

Law of Conversation of Matter

500

Match the name to the compound: SO₄^3- CO₃^2- PO₄^3-

Carbonate Sulfate Phosphate

Sulfate SO₄^3-

Carbonate CO₃^2-

Phosphate PO₄^3-