Elements and Compounds Vocabulary & Practice Questions

Atom

• A pure substance with formed when two or more elements are chemically bonded during a chemical reaction.

• The smallest particle of an element.

• A pure substance composed of the same type of atom throughout.

• Anything that has volume and mass.

Compound

• A pure substance composed of the same type of atom throughout.

• A measure of how much matter is present in a substance.

• A pure substance formed when two or more elements are chemically bonded during a chemical reaction

• A combination of two or more substances that do not chemically combine and can be separated.

Mixture

• Anything that has volume and mass.

• A pure substance composed of the same type of atom throughout.

• A combination of two or more substances that do not chemically combine and can be separated.

• A pure substance formed when two or more elements are chemically bonded during a chemical reaction.

Periodic Table of Elements

• Anything that has volume and mass.

• A measure of the space that matter occupies.

• A table in which all the known elements are arranged by properties and are represented by chemical symbols.

• Physical and chemical characteristics of matter used to describe or identify a substance.

Pure substances are composed of only one type of atom are —

• elements and can be represented by one chemical symbol.

• alloys and can be represented by one chemical symbol.

• mixtures and can be represented by two or more chemical symbols.

• compounds and can be represented by two or more chemical symbols.

Which of the following results when hydrogen and chlorine chemically bond to form hydrogen chloride?

• a mixture

• a solution

• a compound

• a precipitate

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

• molecules.

• elements.

• gases.

• solids.

Tags

NGSS.MS-PS1-1

What is the smallest part of a gold ring that is still gold?

• an atom

• an electron

• a molecule

• a compound

Tags

NGSS.MS-PS1-1

Which combination of letters could be used as a chemical symbol for an element?

• BR

• ChA

• Dy

• FeO

Which phrase does NOT apply to compounds?

• can be separated using physical means

• made of two or more elements

• has a unique set of properties

• made of chemically joined atoms