Date post: | 12-Jan-2016 |
Category: |
Documents |
Upload: | laurel-maude-armstrong |
View: | 220 times |
Download: | 2 times |
Directions:
Click “Slideshow” then “From Beginning” to view this slideshow properly.
Take notes and answer questions from every page. Include subheadings for each separate topic.
Write down any questions you have about something you may not understand.
Elements & Compounds Lab Reassessment Review
Objectives:1.There are billions of materials in our universe.2.Those pure materials are called elements which are represented by a symbol and models.3.Elements combine in thousands of ways to make compounds which are represented by formulas and models.
Elements & Compounds
An element is a substance that is made from one kind of atom only. It cannot be broken down into simpler substances.
An element
An element
atom atom
A compound is a substance that is made from two or more elements that chemically join.
atom atom
A compound made up of 2 different elements
A compound made up of 7 different elements
Although it is very difficult, because a compound is made of more than one element it can be broken down into those separate elements.
A compound made up of 3 different elements
An element
An element
An element
Material Made up of: Element or compound
Water Hydrogen and Oxygen
compound
Coal Carbon element
Carbon dioxide
Carbon and Oxygen
compound
Oxygen Oxygen element
Chalk Calcium, Carbon & Oxygen
compound
Wax Carbon & Hydrogen
compound
Table salt Sodium & Chlorine compound
Caffeine Carbon, Hydrogen, Nitrogen & Oxygen
compound
Material Made up of: Element or compound
Water Hydrogen and Oxygen
compound
Coal Carbon element
Carbon dioxide
Carbon and Oxygen
compound
Oxygen Oxygen element
Chalk Calcium, Carbon & Oxygen
compound
Wax Carbon & Hydrogen
compound
Table salt Sodium & Chlorine compound
Caffeine Carbon, Hydrogen, Nitrogen & Oxygen
compound
Objective:
To learn the symbols and recognize models of elements and compounds.
Representing Elements & Compounds
Look in your periodic table and find the symbols that represent the following
elements:Sodium ……..
Iron ………..
Hydrogen ………..
Chlorine ………..
Carbon …………
Now look in your periodic table and find name that corresponds to the following symbol:Fe ……..
Mg ………..
Br ………..
K ………..
Li …………
Can you answer these???
Q1. The symbol of Nitrogen is:a. Na b. N c. Ni
Q2. Hg is the symbol of:a.Hydrogenb. Helium c. Mercury
Q3. Water is not in the periodic table because:a. It is a liquid substance b. It is a natural substancec. It is a compound not an element
Yes!!!
Q1. The symbol of Nitrogen is:a. Na b. N c. Ni
Q2. Hg is the symbol of:a.Hydrogenb. Helium c. Mercury
Q3. Water is not in the periodic table because:a. It is a liquid substance b. It is a natural substancec. It is a compound not an element
Modeling Elements Elements can also be represented by models. Because they are made of only one type of atom they will be represented by all the same shapes and colors.
H2 = Hydrogen
O2 = Oxygen
H H
O O
Modeling CompoundsWhen different elements combine they will create a compound and usually are represented by a different shape or color.
Cu
SO
O
O
Compounds are also represented by chemical
formulas by combining the element symbols that make
them up.What elements make up this
compound?
MgCl2
1 magnesium and 2 chlorine
AgNO3
What elements make up this compound?
1 silver, 1 nitrogen, and 3 oxygen
Draw each and label it as an Element or a Compound AND explain why.
Now it’s your turn!
Create your own way to represent an element and a compound. You may draw it or build it but be sure to turn it in with your notes.Have fun!