Ions / Isotopes
Parts of an atom
Measurements/ Lab / Trends
p+, n, e-
Periodic Table
100

An atom with a POSITIVE charge is called a(n) ___________

cation

100
The ______ and ________ have to be equal in an atom for it to have a neutral charge.
What are protons and electrons?
100

The "octet rule" is an atoms ability to gain or lose electrons until it achieves ____ in its outter most orbital.

8

100
If Helium has an atomic number of 2, it has _______ protons.
What is 2?
100
Most of the elements on the periodic table are this type.
What are metals?
200

How many electrons does Ca +2 have?

18 e-

200
How do you find the mass number of an atom?

protons + neutrons

200
How many valance electrons does Ca ( calcium) have?

2

200

What is the mass number of carbon isotope with 7 neutrons?

13 ( C-13)

200
The name for a column on the periodic table.
What is a group?
300

When the electrons have the same number of protons the atom is ______________

neutral

300
These three things make up an atom.
What are electrons, protons, and neutrons?
300

What is the correct scientifc notation for 0.00034 g ?

3.4 x 10-4 g

300

Mg,  How many electrons are found in this element?

12 electrons

300
The rows on the periodic table.
What are periods?
400

What has a mass number of 35, and atomic number of 17 , and 18 electrons?

35Cl -1

400
This particle has the least mass in an atom.
What is an electron?
400

What is the correct scientific notation for: 23,450g ?

2.345 x 104 g

400

Isotope Xe-131  How many neutrons are in this element?

77 neutrons

400

What is group 18, that is the least reactive?

Nobel Gases

500

What part of the atom dictates how an atom will bond and chemically react with other atoms?

Outter most orbital / valance e-

500

Where is the majority of the mass in an atom found?

nucleus

500

What happens to the radius of an atom as you GO ACROSS a period?

It decreases

500

How many p, n, and e does K- 30 have?

Protons: 19 Neutrons: 11 Electrons: 19

500

What does the atomic number tell us about the element?

Number of protons ( identity) 

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