IPS Final Chemistry

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; it only changes forms.

Front

What happens to atoms during a chemical reaction?

Back

Atoms rearrange to form new substances, but the total number of atoms remains the same.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How is the periodic table organized?

Back

The periodic table is organized by increasing atomic number.

Front

What is a closed system in chemistry?

Back

A closed system is one that does not exchange matter with its surroundings, but can exchange energy.

Front

What is an open system in chemistry?

Back

An open system is one that can exchange both matter and energy with its surroundings.

Front

What does the period number in the periodic table indicate?

Back

The period number indicates the number of energy levels (or shells) that an atom has.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

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.