Chemistry Review Packet

Which of the following is NOT considered a sample of matter?

Heat

Which of the following is an example of a state of matter?

Gas

Identify the element from the options below

Phosphorus

How are elements organized?

In a table

Which of the following is considered a compound?

Scadium nitride

How many atoms are in the structure for butyric acid

14

Identify the atom that is neutral from the options below

Ca-40

Which of the following represents a net zero charge for the atom specified?

3 protons, 3 electrons, 4 neutrons

How many valence electrons are in the model of the atom shown?

2

What subatomic particle is neutral and located inside the nucleus?

Neutron

What subatomic particles have a mass of 1 amu?

Protons and neutrons

Where is all the positive charges of an atom located?

Inside the nucleus

What element has an atomic number of 14?

Silicon

Which of the following is an appropriate notation for magnesium atom with a mass number of 25?

Mg-25

Which of the following is a quantity of matter that remains the same?

Mass

What term best describes atoms of the same element with different numbers of neutrons?

Isotopes

Which of the following participate in bonding?

Valence electrons

Identigy the reactants in the chemical equation: CH4 + 2O2 --> CO2 + 2H2O

CH4 and O2

What substance displays hydrogen bonding?

Water

What element has the largest electronegativity?

Nitrogen (closest to fluorine)

Which of the following descibes a chemical reaction?

Hydrogen gas and oxygen gas combine to form water vapor

What term best describes a bond formed between nonmetal atoms?

Covalent bond

Which of the following is an example of an ion?

P-3

Which of the following is considred a molecule?

CO2 (g)

Which of the following has the highest temperature?

Water vapor

Which of the following is the solvent for salt water?

Water

Identify the aqueous solution from the examples below

Seawater

Which of the following is NOT part of the scientific method

Human error

Identify the acid from the pH value provided

pH=3

Which of the following is an organic compound

C2H6

What term best describes a substance that resists changes in pH

Buffer

Which of the following hates water and is considred hydrophobic

Mineral Oil

What term best describes C10 H22

Hydrocarbon

Order from least to greatest

0.6, -1/7, -0.1, 1/2

-1/7, -0.1, 1/2, 0.7