Electrons

Front

What is the charge of an electron?

Back

Negative charge.

Front

How many electrons are in a neutral atom?

Back

The number of electrons is equal to the number of protons.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is the mass of an electron compared to a proton?

Back

An electron has a smaller mass than a proton.

Front

What element has 8 protons?

Back

Oxygen (O).

Front

How many electrons does Calcium (Ca) have?

Back

20 electrons.

Tags

NGSS.MS-PS1-1

Front

How many electrons does Aluminum (Al) have?

Back

13 electrons.

Tags

NGSS.MS-PS1-1

Front

What is the difference in the number of electrons between Calcium and Aluminum?

Back

7 electrons.

Front

What particle has a positive charge?

Back

Proton.