Chemistry Foundations

Atomic Structure

100

The 3 parts of an atom and their charges are...

• Proton- Positive charge • Nuetron- NO charge • Electron- Negative charge

200

Lewis dot structures show this specific type of subatomic particle

valence electrons

300

This type of model represents electrons in their proper electron shells.

Bohr model

400

The formula for identifying the number of neutrons in an atom when given the atomic mass and atomic number is...

number of neutrons = atomic mass - atomic number

500

This particular calcium ion has 20 protons and 18 electrons, making its charge...

2+

Chemical Bonding

100

Ionic bonding occurs between these two classifications of elements.

metals and nonmetals

200

Electrons behave this way during covalent bonding.

shared/sharing

300

The chemical formula for the ionic bond between sodium and selenium is this.

Na₂Se

400

The chemical formula for the ionic bond between magnesium and sulfur is this.

MgS

500

The chemical formula for the covalent bond between nitrogen and hydrogen is this.

NH₄

Balancing Chemical Equations

100

What we place in front of chemical formulas to balance equations

Coefficient

200

When balancing the reactants and products of a chemical equation, you need to balance the...

Number of atoms for each element

300

Balance this equation... NaCl + F₂ > NaF + Cl₂

2NaCl + F2 --> 2 NaF + Cl₂

400

Balance this equation... HCl + CaCO₃ > CaCl₂ + H₂O + CO₂

2HCl + CaCO₃ > CaCl₂ + H₂O + CO₂

500

Balance this equation... KClO₃ > KCl + O₂

2KClO₃ --> 2KCl + 3O₂

Classifying Reactions

100

The type of reaction that has multiple reactants and a single product

composition 

200

The type of reaction during which one element switches places with another

single replacement reaction

300

The type of reaction that produces an oxide and water

combustion

400

The type of reaction signified by this generic equation:

AB --> A + B

decomposition

500

Classify this reaction:

4 Al(s) + 3 O₂(g) → 2 Al₂O₃(s)

composition 

Predicting Products

100

Show the reactivity trends for metals

Left & down = increasing reactivity

200

Predict the products for the following reaction and balance the equation, if needed:

Fe +   CuSO₄ →

Fe +   CuSO₄ → Cu + FeSO₄

300

Free halogens will always be found as these types of molecules

diatomic molecules

400

Predict the products of the following reaction and balance the products, if needed:

Br + NaCl --> ??

no reaction

500

Predict the products of the following reaction and balance the equation, if needed:

Na + MgCl₂ --> ??

2Na + MgCl₂ --> Mg + 2NaCl