Chemistry Final Exam Review

What is the name of the ionic compound formed from calcium and bromine?

Anions tend to have a ______ charge.

A substance that contains two or more elements chemically combined in a fixed proportion.

Why do atoms share electrons in covalent bonds?

What did Mendeleev do?

Cations tend to be _____.

Chemistry affects all of life because all living and nonliving things are made of matter.

Molecules adjust their shapes to keep which of the following as far apart as possible?

A 25.0 g sample of a liquid has a volume of 10.0 mL. What is the density of the liquid?

Columns of the periodic table are known as ___.

How do isotopes of an element differ?

What is the formula for nitrogen trihydride?

A mole is...

What makes one element different from another?

In order to balance a chemical equation, it may be necessary to adjust the

When ice melts and becomes liquid water, it has undergone a ___.

What is Chuck Norris' favorite element?

The ions Ca²⁺ and PO₄^3- form a salt with the formula __________.

The atomic number of an element whose atoms have 10 protons, 11 neutrons & 10 electrons is ___

The unbalanced reaction C₇H₁₆   +  O₂   →   CO₂  +  H₂O  is a ______ reaction.

Where does the mole ratio come from?

The reaction Pb(NO₃)₂(aq) + 2KI(aq) →  PbI₂(s) + 2KNO₃(aq) is a

Most elements are ___.

What is the charge on the magnesium ion?

What is the correct name for the formula SiO₄?

An electron in the highest energy of an element’s atoms is called a(n)  ____ electron.

What is molar mass?

JJ Thomson discovered the:

Carbon tetrachloride, CCl₄  molecule is ______.

What is the molar mass of MgF₂ (Mg=24.3g/mol and F=19.0g/mol)?

How many electrons are shared in a single covalent bond?

This symbol separates the reactants from products and means “to yield”.

In an equation, the symbol for a substance in water solution is followed by

The shape of a molecule that has 2 covalent single bonds and no lone pairs on the central atom

Which equation is NOT balanced?

The equation, AX →   A +  X  is the general equation for a ___ reaction

Express the following decimal form, 5620 meters, in scientific notation.

When the equation Fe₂O₄  +    Al  →    Al₂O₃  +  Fe  is balanced what is the coefficient of Fe

Which of the following materials cannot be broken down into a simpler form?

Which is the ground state electron configuration for chlorine?

_____ is the study of the composition of matter and the changes that matter undergoes.

Which of the following elements is unreactive?

How many dots are drawn around the Lewis Dot structure of chlorine?

How many unshared pairs of electrons does the nitrogen atom in ammonia (NH3) possess?