Linda - Chem Final

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Example: Dissolving salt in water.

Front

What happens to an atom when it gains electrons?

Back

When an atom gains electrons, it becomes negatively charged.

Front

What is the charge of an atom that has lost one electron?

Back

The charge of an atom that has lost one electron is +1.

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the molar mass of NaOH?

Back

The molar mass of NaOH is 40 g/mol.

Front

What is the name of Fe2(SO4)3?

Back

The name of Fe2(SO4)3 is iron (III) sulfate.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between an anion and a cation?

Back

An anion is a negatively charged ion, while a cation is a positively charged ion.

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.

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.