Subatomic Particles
Structure of an Atom
Reading an Element Block
Identity
Reactivity
Arrangement of the period table
Who am I?
100
Which of the 3 subatomic particles has a positive charge?
Protons
100
What is the name of the small dense structure is in the center of the atom that holds the protons and the neutrons?
Nucleus
100
What is represented by the letter A?
Atomic Number
100
What determines the identity of an atom?
(what do I need in order to go find it on the periodic table?)
The number of protons which is the Atomic Number
100
A scientist is studying the reactivity of elements. What should he count to determine the reactivity of an element?
Valence Electrons
100
The up and down columns are called ________
Groups
100
I am an electrically neutral atom that has an atomic number of 5. Who am I?
Boron (B)
200
Which of the 3 subatomic particles has a neutral charge (no charge)
Neutrons
200
What is the name of the structure of an atom that is outside the nucleus and contains the electrons?
Electron cloud
200
What does the atomic number directly refer to?
Number of protons
200
What is the atomic number of this atom?
3
Because there are 3 protons
200
If an atom has an outer shell that is full of valence electrons (8) would it be considered highly reactive or non-reactive?
Non-reactive
Full shell is non-reactive and stable
200
The side to side rows are called _______ and tell you how many ________ ________ an element has
Periods
Energy levels (rings)
could also be called shells
200
I am an electrically neutral atom that contains 9 protons, 9 electrons and 10 neutrons. Who am I?
Fluorine (F)
300
Which of the 3 subatomic particles has a negative charge
Electrons
300
An atom is made up of mostly _______ _______
Empty Space
300
What else does the atomic number tell you?
The number of electrons
300
What is the identity of this atom?
Carbon (C)
Because there are 6 protons in the model and Carbon has atomic number 6
300
If an atom has only 1 valence electron in its outer shell, would it be considered highly reactive or non-reactive?
Highly reactive
The less valence electrons the more reactive (angry)
300
What color is the box that surrounds the Group number?
Blue
Group number is the top and has no letters
300
I am an electrically neutral atom that contains 4 neutrons, 3 electrons, and some protons. Who am I?
Lithium (Li)
400
Which 2 subatomic particles are located inside the nucleus?
Protons and Neutrons
400
Which structure makes up most of an atoms mass?
Nucleus
Because the only particles that have mass (protons and neutrons) are in the nucleus
400
What determines the identity of an atom?
(what do I need in order to go find it on the periodic table?)
The number of protons which is the Atomic Number
400
What is the identity of this atom?
Helium (He)
Because it has 2 protons which means it has an atomic number of 2
400
Where are valence electrons located?
Outer most energy level
400
What color is the box that surrounds the period number?
Red
Period number tells you how many energy levels (shells or rings) every element has in that row (all the way across)
400
What is my identity (who am I)
Beryllium (Be)
500
Which subatomic particle orbits around the nucleus on the energy levels in the electron cloud?
Electrons
500
Which structure makes up most of an atoms volume?
Electron cloud
Electron cloud is full of empty space and is what makes the atom take up space
500
How many protons does this element contain?
How many electrons does this element contain?
11 protons and 11 electrons
Because the atomic number is 11 and atomic number tells you how many protons and also how many electrons
500
What is the identity of this atom?
Nitrogen (N)
Because it has 7 protons which means it has an atomic number of 7
500
How many valence electrons does this atom contain?
3
Count the electrons on the outermost shell
500
If 2 elements are in Period 3 what do they have in common?
They have the same number of energy levels.
They both have 3 energy levels
500
What is my identity (who am I)
Neon (Ne)
600
Which 2 subatomic particles both have a mass of 1amu?
Protons and Neutrons
600
If the nucleus is full of protons with a positive charge, and neutrons with a neutral (no charge) charge. What is the charge of the entire nucleus?
Positive
Positive charges and no charges = positive charge
600
How many protons does this element have?
How many electrons does this element have?
1 proton and 1 electron
Because the atomic number is 1 and atomic number tells you how many protons and also how many electrons
600
An electrically neutral atom contains 5 protons, 5 electrons, and 6 neutrons. What is the identity of this atom?
Boron (B)
5 protons means it has an atomic number of 5
600
Which colored box tells you how many valence electrons that column of elements contains
Green box
The numbers that have the letter "A" next to them tell you how many valence electrons
600
If two elements are in the same group what do they have in common?
They have the same number of _________
Same number of valence electrons
600
I am in group 17.
I have 7 valence electrons and 3 energy levels
Who am I?
Chlorine (Cl)
700
Which subatomic particle has a mass of 0amu?
Electrons
700
If the electron cloud is full of empty space and electrons, what is the charge of entire electron cloud?
Negative
Because electrons have a negative charge
700
What is represented by letter B?
Atomic Mass
700
Identify the element that has 10 protons
Neon (Ne)
10 protons means it has atomic number 10
700
Which element is more reactive, Potassium (K) or Krypton (Kr)?
Potassium (K) is more reactive
When you find potassium go to the top of the column and find the number with the letter "A".
Potassium (K) is under 1A meaning it has 1 valence which makes it highly reactive
Krypton (Kr) is under 8A which means it has 8 valence electrons. 8 is a full shell which makes it non reactive
700
How many valence electrons do the all of the elements in group 13 contain?
3 valence electrons
The valence number under the group number says 3A which means they all have 3 valence electrons
700
I am in Group 13
I have 3 valence electrons and 4 energy levels
Who am I?
Gallium (Ga)
800
Which of the 3 subatomic particles has the smallest mass?
Electrons
800
If an atom is considered electrically neutral, that means it has the same number of ________ and _________
Protons and electrons
same number of positive particles (protons) and negative particles (electrons)
800
What does the atomic mass tell you?
Protons + neutrons added together
800
Identify the that has 11 protons and 12 neutrons
Sodium (Na)
11 protons means it has an atomic number of 11
800
Which family on the periodic table is the most reactive?
Alkali Metals (Group 1)
Because they are all under 1A meaning they all have 1 valence electron and are highly reactive.
800
What is the Family name of Group 1?
Alkali Metals
Most reactive family
800
What is my identity? (who am I)
Argon (Ar)
8 valence electrons and 3 energy levels
900
Where are valence electrons located?
On the outermost energy level (ring)
900
Is this atom electrically neutral?
Yes
3 protons (positive) and 3 electrons (negative)
900
How man protons does this element have?
How many electrons does this element have?
54 protons
54 electrons
Atomic number directly refers to number of protons
Atomic number also tells you how many electrons
900
Identify the element that has 36 protons
Krypton (Kr)
36 protons means it has an atomic number of 36
900
Which family on the periodic table is the least reactive?
Noble Gases
Because they are under 8A which means they all have 8 valence electrons (besides He) and full outer shells.
900
What is the Family name of Group 2?
Alkaline Earth Metals
900
What is my identity? (Who am I)
Boron (B)
2 energy levels and 3 valence electrons
1000
If the nucleus is full of protons with a positive charge, and neutrons with a neutral (no charge) charge. What is the charge of the entire nucleus?
Positive
Positive charges and no charges = positive charge
1000
How do you find the mass of an atom?
Add everything in the nucleus together (protons + neutrons)
1000
How many protons does this element have?
How many electrons does this element have?
15 protons
15 electrons
Atomic number directly refers to the number of protons
Atomic number also tells you how many electrons
1000
Identify the element that has 33 protons and 42 neutrons.
Arsenic (Ar)
1000
Why is Argon (Ar) less likely to react than Sodium (Na)?
Because Argon (Ar) has a full outer shell
1000
What is the Family name of Group 17?
Halogens
1000
I am in the Noble gases family and I have 5 energy levels
Who am I?
Xenon (Xe)
Group 18, period 5
1100
Can you identify the subatomic particles represented by letter A, B, C?
A = Electron (outside the nucleus)
B = Neutron (in the nucleus but no charge)
C = Proton (in the nucleus with a positive charge)
1100
What is the mass of this atom?
7
3 protons + 4 neutrons = mass of 7
1100
How many neutrons does this element have?
6
Round the atomic mass to 11.
Atomic mass - atomic number = neutrons
11-5=6
1100
What is the identity of an electrically neutral atom that contains 26 neutrons, 22 electrons and some protons?
Titanium (Ti)
You didn't have protons, but in an electrically neutral atom the protons and electrons are the same number
1100
Describe the reactivity of this element (highly reactive, moderately reactive, or non-reactive)
Moderately reactive
1100
What is the Family name of Group 18?
Noble Gases
1100
I am in the Alkaline Earth Metals family and I have 3 energy levels
Who am I?
Magnesium (Mg)