Periodic Table
If we know an elements atomic number, how can we know how many electrons it has?
Each element on the Periodic table is in it's neutral state, so it will have the same number of protons as electrons. Since the atomic number tells how many protons, we know it has the same number of electrons!
When Sodium(Na) reacts with Chlorine(Cl) it will give its one valence electron to Chlorine. What kind of bond is this?
Ionic bond
What does the atomic number tell about an Element?
The number of protons in the nucleus
Find the ionic charge of Sulfur (S) once it reacts
S 2-
(It currently has 6 valence electrons, it needs two more to fill out it's shell. Since it's taking two negatively charged electrons it will no longer be balanced and have a negative charge of 2)
What is one way you have made yourself proud?
No wrong answers! (If you can't think of anything your teacher will share some of the ways you make them proud)
What does each "group" of elements have in common?
The number of Valence electrons
Fluorine and Chlorine both have 7 valence electrons. When they react with each other they each share one of their valence electrons with the other so their valence shells are connected through those electrons. What kind of bond do they form?
Covalent bond
How can you tell the reactivity of an element?
You can look at the element's group and how reactive they are, you can look at the number of valence electrons an element has, you can look at how many energy levels it has (the further electrons are from the nucleus, the more likely they are to be given away, making the element more reactive)
Which group of elements are the least reactive?
The Noble Gasses
If an element has 7 valence electrons, what is it's ionic charge going to be once it bonds?
-1. They will have 1 more negatively charged electron than positively charges proton so it will have a negative charge of 1.
I am pink, have green shorts and my friends don't live far
I'm really not the brightest, but my friends say I'm a star
Who am I?
Patrick Star
When Copper (Cu) atoms react with each other, the electrons move around within the cluster of atoms like an electron sea. What kind of bond is this?
Metallic bond
What is the difference between "malleable" and "brittle" elements?
You can bend or hammer a malleable element into thin sheets or different shapes, but if you hammer a brittle element it will shatter
What is one big property of the "metals" group on the periodic table?
They are malleable
How is Hydrogen different from the other elements in it's group?
It's a non-metal
What does an element's "period" tell you about that element?
The number of energy levels or electron shells
If an element has 1 valence electron, what kind of bond is it most likely to form?
An ionic bond- it will want to give it's electron away so it can become stable!
How can you find an element's atomic mass?
Add together the protons and neutrons
Which 2 groups are the best at conducting thermal energy?
The transition metals and alkali metals
Why are the noble gasses the least reactive group?
They each have 8 valence electrons, giving them a full shell
What atomic Property is the structure of the Periodic Table based on?
Atomic Number
Find Carbon on the periodic table. Based on how many valence electrons it has, how many bonds is it able to form with other elements?
4 bonds- it already has 4 valence electrons so it needs 4 more to complete the shell
What are some ways to show molecule structure in a visual format?
Ball and stick model, dot model, skeletal/line models
What year did the Titanic sink?
April 14th, 1912
How do you find the charges of ions anywhere on the periodic table? (show an example for double points!)
You look at the number of valence electrons the element has and how many it is likely to loose or gain during a reaction. If the element ends up with unbalanced protons and electrons it will have either a positive or a negative charge.