CBA #1 Review

Front

What is a homogeneous mixture?

Back

A mixture where the components are distributed uniformly and the composition is the same throughout.

Front

What is the number of nitrogen (N) atoms in (NH₄)₂CrO₄?

Back

2

Front

How many atoms are in the compound 2MgCl₂?

Back

6 atoms

Front

What is the pH level of tomatoes, and are they an acid, base, or neutral?

Back

Tomatoes have a pH level between 4 and 4.5, making them an acid.

Front

What is the pH of pure water, and is it an acid, base, or neutral?

Back

Pure water has a pH of 7, making it neutral.

Front

What is the definition of an acid?

Back

A substance that donates protons (H⁺ ions) in a solution.

Front

What is the definition of a base?

Back

A substance that accepts protons (H⁺ ions) or donates hydroxide ions (OH⁻) in a solution.

Front

What is the pH range of acids?

Back

Acids have a pH less than 7.

Front

What is the pH range of bases?

Back

Bases have a pH greater than 7.

Front

What is the formula for calculating the number of atoms in a compound?

Back

Count the number of each type of atom in the chemical formula and sum them.