Table of Chemistry

Which item on this element square represents the atomic number?

• 13

• Al

• Aluminum

• 26.981538

Tags

NGSS.MS-PS1-1

What does the atomic mass tell you? 

• Basically,the number of electrons and protons

• The number of neutrons

• Basically, the number of protons and neutrons

• The number of protons.

The atomic number tells you what?  READ THE ANSWERS CAREFULLY

• only the number of electrons

•  only the number of protons

• only the number of neutrons

• the number of both electrons and protons in an atom.

These are found on the Periodic Table.

• Compounds

• Elements

• Mixtures

What is the atomic mass of "F"

• 9

• 18

• 17

• 19

An atom of the element with atomic number 6 always has _____

• six protons in its nucleus

• an atomic mass of six

• more than six neutrons

• six electron clouds

Which is a proton?

• A

• B

• C

Tags

NGSS.MS-PS1-1

During a flame test, sodium chloride produces an intense yellow flame. This yellow color is produced when electrons in excited atoms

• are gained by the atoms

• are lost by the atoms

• move to higher energy states within the atoms

• move to lower energy states within the atoms

Tags

NGSS.HS-PS1-2

What quantity is the same among atoms of the same element?

• mass number

• atomic number

• number of neutrons

• number of nucleons

An atom that has 8 protons and 10 neutrons is an isotope of the element

• nitrogen

• oxygen

• fluorine

• neon

Tags

NGSS.MS-PS1-1