2024 1st Chemistry Review

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no electric charge.

Front

What is an example of a heterogeneous mixture?

Back

Salad is an example of a heterogeneous mixture, as its components are not uniformly distributed.

Front

What is a compound?

Back

A compound is a substance made up of two or more different kinds of atoms chemically bonded together, such as H2O (water).

Tags

NGSS.MS-PS1-1

Front

What is a proton?

Back

A proton is a positively charged subatomic particle located in the nucleus of an atom.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, such as silicon and germanium.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances and consists of only one type of atom.

Front

What is the charge of an electron?

Back

An electron has a negative charge and is found outside the nucleus of an atom.

Tags

NGSS.MS-PS2-3

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout, such as salt water.

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 the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5