Atomic Structure & Chemical Reactions Biology 11 (2.1)

Front

What is the solvent in a Kool-Aid mixture of powder, sugar, and water?

Back

Water is the solvent in the Kool-Aid mixture.

Front

According to which law is matter neither destroyed nor created during a chemical reaction?

Back

The Law of Conservation of Mass states that matter is neither destroyed nor created during a chemical reaction.

Front

How do you calculate the average atomic mass of an isotope with different forms?

Back

Average atomic mass = (percentage1 * mass1 + percentage2 * mass2 + percentage3 * mass3) / 100.

Front

What is the number of protons in an element with an atomic number of 7?

Back

The element with an atomic number of 7 has 7 protons.

Front

What are the products of the chemical reaction Zn + CuSO4?

Back

The products are ZnSO4 and Cu.

Front

Define an isotope.

Back

An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Front

What is the significance of balancing chemical equations?

Back

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

Front

What is the atomic mass unit (amu)?

Back

The atomic mass unit (amu) is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Front

What is the difference between a solvent and a solute?

Back

A solvent is the substance that dissolves a solute, while a solute is the substance that is dissolved.

Front

What does the term 'reactants' refer to in a chemical reaction?

Back

Reactants are the starting substances in a chemical reaction that undergo change.