TEK 5A, 5B, 6D STUDY GUIDE

Front

Group 18 elements are called?

Back

Noble gases.

Front

Which elements are found in Period 2 of the periodic table?

Back

Boron (B), Carbon (C), and Nitrogen (N) are all found in Period 2.

Front

If you cut a piece of aluminum foil, is it no longer foil?

Back

False. It is still aluminum foil.

Front

What is the average atomic mass for silicon?

Back

28.09.

Front

An 'unknown' element has 20 protons, 20 electrons, and 20 neutrons. Which element is it above?

Back

Strontium (Sr).

Front

What are alkali metals?

Back

Alkali metals are elements in Group 1 of the periodic table, known for being highly reactive.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are elements in Group 2 of the periodic table, known for having two electrons in their outer shell.

Front

What are halogens?

Back

Halogens are elements in Group 17 of the periodic table, known for being very reactive nonmetals.

Front

What is the significance of protons in an element?

Back

Protons determine the atomic number and identity of an element.

Front

What is the difference between atomic mass and average atomic mass?

Back

Atomic mass is the mass of a single atom, while average atomic mass is the weighted average of all isotopes of an element.