Honors Chemistry Final Fall 2024

Front

Atoms of the same element which have a different number of neutrons are called _________________

Back

isotopes

Front

What is the name of CaF2?

Back

Calcium Fluoride

Front

The limiting reactant is used up first. What does this mean in a chemical reaction?

Back

The limiting reactant is the substance that is completely consumed when the chemical reaction goes to completion, thus determining the amount of product formed.

Front

Which state of matter is characterized by having a definite volume but no definite shape?

Back

Liquid

Front

How many valence electrons does sulfur have?

Back

6

Front

What is the definition of a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the difference between an ion and an isotope?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net charge, while an isotope is an atom of the same element with a different number of neutrons.

Front

What is the principle of conservation of mass in a chemical reaction?

Back

The principle states that mass is neither created nor destroyed in a chemical reaction; the mass of the reactants equals the mass of the products.

Front

What is the formula for calculating the number of neutrons in an atom?

Back

Number of Neutrons = Atomic Mass - Atomic Number.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.