8.P.1 (Chemistry) Review

Front

What does the Law of Conservation of Mass state?

Back

The Law of Conservation of Mass states that in a closed system, the total mass of reactants equals the total mass of products; matter cannot be created or destroyed.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, reflecting the Law of Conservation of Mass.

Front

What is a neutral atom?

Back

A neutral atom has an equal number of protons and electrons, resulting in no overall charge.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements chemically bond together, such as H2SO4 (sulfuric acid).

Front

What are metals?

Back

Metals are elements that are typically shiny, malleable, ductile, and good conductors of heat and electricity.

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.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O, indicating it is composed of two hydrogen atoms and one oxygen atom.

Front

What is the significance of subscripts in a chemical formula?

Back

Subscripts in a chemical formula indicate the number of atoms of each element present in a molecule.

Front

What is an example of a physical property of metals?

Back

An example of a physical property of metals is malleability, which is the ability to be hammered or pressed into thin sheets.

Front

What is the role of electrons in chemical bonding?

Back

Electrons, particularly valence electrons, are involved in forming chemical bonds between atoms, either by sharing (covalent bonds) or transferring (ionic bonds).