Matter & Its Interactions PS.8.1

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What does it mean for a chemical reaction to be balanced?

Back

The number of atoms of each element is the same on both sides of the equation.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, matter is neither created nor destroyed; the total mass of reactants equals the total mass of products.

Front

What are nonreactive gases?

Back

Gases that do not readily undergo chemical reactions under standard conditions, such as helium (He) and argon (Ar).

Front

How many atoms are in the molecule HCs₃NaO₂?

Back

7

Front

What is the difference between reactants and products in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change, while products are the substances formed as a result of the reaction.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction, showing the reactants and products.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.