Flashcardizz: Elements and Compounds

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen (H), oxygen (O), and iron (Fe).

Front

Which of the following is an example of an element? H2O, H2, NaCl, CaCO3

Back

H2 is an example of an element.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. Examples include water (H2O) and sodium chloride (NaCl).

Tags

NGSS.MS-PS1-1

Front

What is the chemical formula for salt?

Back

The chemical formula for salt is NaCl.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

Tags

NGSS.MS-PS1-5

Front

What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

Front

Is Iron (Fe) an element or a compound?

Back

Iron (Fe) is an element.

Front

What does it mean for a substance to be composed of at least two different elements?

Back

It means that the substance is a compound.

Tags

NGSS.MS-PS1-1

Front

What is the simplest form of matter that retains its identity?

Back

An element is the simplest form of matter that retains its identity.

Front

Can compounds be broken down into simpler substances?

Back

Yes, compounds can be broken down into their constituent elements through chemical reactions.

Tags

NGSS.MS-PS1-2