TEKS 7.6 Elements, Compounds, Periodic Table

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. For example, water (H2O) is a compound made of hydrogen and oxygen.

Tags

NGSS.MS-PS1-1

Front

What does the subscript number in a chemical formula indicate?

Back

The subscript number indicates the number of atoms of the element in the molecule. For example, in H2O, the '2' indicates there are two hydrogen atoms.

Tags

NGSS.MS-PS1-1

Front

Can atoms exist independently?

Back

Yes, atoms can exist independently. For example, a single oxygen atom (O) can exist on its own.

Front

How are elements arranged in the periodic table?

Back

Elements in the periodic table are arranged in order of increasing atomic number.

Front

What is the chemical symbol for Oxygen?

Back

The chemical symbol for Oxygen is 'O'.

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) and carbon (C).

Front

What is the smallest unit of a compound?

Back

The smallest unit of a compound is a molecule, which is formed when two or more atoms bond together.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

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

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

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a compound using symbols for the elements and numbers to indicate the ratio of atoms.

Tags

NGSS.MS-PS1-1