CP Chem Exam Review Part 3

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. Therefore, the total mass of reactants must equal the total mass of products.

Front

What is the electron configuration of Chlorine?

Back

The electron configuration of Chlorine is 1s^2 2s^2 2p^6 3s^2 3p^5.

Front

How many valence electrons does Lithium have?

Back

Lithium has one valence electron, represented by the electron dot diagram as Li with one dot.

Front

What is the period and group of Silver (Ag) in the periodic table?

Back

Silver (Ag) is located in Period 5, Group 11 of the periodic table.

Front

What is the period of Bromine (Br)?

Back

Bromine (Br) is in Period 4 of the periodic table.

Front

Define the Law of Multiple Proportions.

Back

The Law of Multiple Proportions states that when two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in a ratio of small whole numbers.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the Law of Conservation of Mass is satisfied, meaning that the number of atoms of each element is the same on both sides of the equation.

Front

What is an electron dot diagram?

Back

An electron dot diagram represents the valence electrons of an atom as dots around the chemical symbol of the element.

Front

What is the general trend of atomic size in the periodic table?

Back

Atomic size generally increases down a group and decreases across a period from left to right.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, resulting in charged ions, while covalent bonds involve the sharing of electrons between atoms.