Atomic Basics
All matter is made of tiny particles called
Atoms
Where are protons located in an atom?
The nucleus
The periods on the periodic table tell us what about an atom?
How many shells it has
What is a positively charged ion called?
A cation
What subatomic particle has the smallest mass?
Electrons
What subatomic particle determines an element's identity?
Protons
What is the charge of a neutron?
Zero
What is the name of the group for group number 1
Alkali Metals
What do we call a negatively charged ion?
An anion
In what way are elements in the same group similar
They have the same number of valence electrons
What is the overall charge of a neutral atom?
Zero
A neutral atom of Magnesium has 12 protons. How many electrons will it have?
12 electrons
What group on the periodic table is least reactive?
Noble Gasses
Sodium has 11 protons and 10 electrons. What is its charge?
+1
What is the group name for group 2 elements
Alkaline Earth Metals
Carbon has 6 protons and 6 neutrons. What is it's mass number?
12
An atom has 8 protons, 10 neutrons, and 10 electrons. What is its charge?
-2
An element is in period 3 and group 16. How many valence electrons does it have?
6 valence electrons
What kind of ion is Ca+2
A cation
A neutral atom has 15 protons. It loses 3 electrons. What is the ion that is formed?
P-3
An atom has 3 protons. What atom is this?
Lithium
An atom has a mass number of 31. It has 15 protons. How many neutrons does it have?
16 neutrons
Halogens are highly reactive when mixed with what group on the periodic table?
Alkali Metals
How many valence electrons do halogens need to obtain a full outer shell?
1 valence electron
What is the mass of a proton
1u