PT and Atoms

__________ are the building blocks of matter.

Tags

NGSS.MS-PS1-1

Atoms that have a positive or negative charge because they have unequal numbers of protons and electrons.

• Isotopes

• Ions

• Protons

• Neutrons

How many protons, electrons and neutrons in this cation?

• P: 55, E: 54, N: 78

• P: 55, E: 55 N: 133

• P: 54, E: 55, N: 78

• P: 133, E: 55, N: 78

Tags

NGSS.MS-PS1-1

What is an atom with a positive charge?

Adding the number of neutrons and atomic number is the _______________.

• average atomic mass

• isotope

• mass number

• protons

Which scientist bombarded gold foil with alpha particles to find the atom consists of a small, dense, positively charged interior surrounded by a electron cloud?

• JJ Thomson

• Ernest Rutherford

• Niels Bohr

• Mendeleev

Tags

NGSS.HS-PS1-8

Atoms that have the same atomic number, but different mass numbers due to a change in the number of neutrons.

• Ion

• Atom

• Cation

• Isotope

How many neutrons in the following isotope:

Cations _____ electrons. (select all that apply)

• lose

• gain

• give

• take

Tags

NGSS.MS-PS1-5

Which scientist is known as the father of the periodic table?

• Henry Mosely

• Aristole

• Mendeleev

• JJ Thomson