TCAP 7th Science TN Chemistry Review

Front

What is an Element?

Back

An element is a pure substance that consists of only one kind of atom. Examples include hydrogen (H), oxygen (O), and carbon (C).

Front

What is the Triple Point?

Back

The triple point is the specific combination of pressure and temperature at which all three states of matter (solid, liquid, and gas) coexist in equilibrium.

Front

How many protons does an atom with atomic number 6 have?

Back

An atom with atomic number 6 has 6 protons.

Front

What is an Electron?

Back

An electron is a negatively charged particle that orbits the nucleus of an atom.

Front

What is a Gas?

Back

A gas is a state of matter that has no definite shape or volume, and it expands to fill its container.

Front

What is a Compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. Example: Water (H2O).

Front

What is a Mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Example: Air.

Front

What is a Proton?

Back

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

Front

What is a Neutron?

Back

A neutron is a neutral particle found in the nucleus of an atom, with no charge.

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.