7 - Unit 1, Section 1 - Day 1

Atoms, Elements, and Compounds: A Review

Unit 1, Section 1

What are the three types of subatomic particles and their electric charges?

Think-Pair-Share

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

It determines the element of the atom

Atomic Number

Concept Check!

Use the periodic table I just gave you.

I will name five elements. Raise your hand when you know their atomic number!

The mass number of an atom is the number of protons plus the number of neutrons

Mass Number

Concept Check, Part 1!

An atom has 15 protons and 16 neutrons. Raise your hand once you have calculated the mass number of this atom.

Concept Check, Part 2!

An atom of iron has 30 neutrons. Raise your hand once you've calculated the mass number of this iron atom.

Concept Check, Part 3!

An atom of yttrium has a mass number of 88. Raise your hand once you've calculate the number of neutrons in this yttrium atom.

Exit Ticket

I'll give you the Exit Ticket assignment

Work on it on your own

Turn it in before class ends