Unit 5: Periodic Table - 7th Grade 2024

Front

What does the atomic symbol represent in the periodic table?

Back

The atomic symbol represents the unique identifier for an element, typically consisting of one or two letters.

Front

What is a mixture in chemistry?

Back

A mixture is a combination of two or more substances that retain their individual properties and can be separated by physical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in a fixed ratio.

Tags

NGSS.MS-PS1-1

Front

How can you identify a compound from a chemical formula?

Back

A compound can be identified by its chemical formula, which shows the elements present and the ratio of atoms, such as H2O for water.

Tags

NGSS.MS-PS1-1

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Front

What does the term 'elemental molecule' refer to?

Back

An elemental molecule is a molecule that consists of two or more atoms of the same element bonded together, such as O2 or N2.

Tags

NGSS.MS-PS1-1

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound, which can be ionic or covalent.

Tags

NGSS.HS-PS1-1

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has distinct, separate components.

Front

What is an example of a compound?

Back

An example of a compound is sodium chloride (NaCl), which is formed from sodium and chlorine.

Tags

NGSS.MS-PS1-1