8/14/2019 Elements,Compounds,Mix[1] Candy ActivityALPS

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ELEMENTS, COMPOUNDS, AND MIXTURES

Lesson Plan

Rationale:Students will need to be able to recognize the difference between

elements, mixtures, and compounds in future science classes.

Objectives: Students will be able to identify a substance as an element, mixture or

compound correctly

Materials:Worksheet for each student, candy- starbursts, toothpicks ( 6 or 7 each

student).

Teacher InstructionsINTRODUCTION

In class the last couple of days you have been thinking about MATTER.o What is matter? (anything that has mass and takes up space)o Today we are going to take a look at the three classes of matter:

Elements, Compounds, and Mixtures. On the handout there is a list of about 15 substances, I would like you to

individually go through the list and write down what you think whether theitem is an element (E), compound (C), or mixture (M).

After students are done go through a couple of items on the listo Ask what they are a lot of times the students will not agree (that is

why we are doing this)

CANDY ACTIVITY Give each student about 10 pieces of some type of soft candy (gum drops/

starburst) and 6 or 7 toothpicks Tell the students that each color of the candy represents a different type of

atom on the periodic table.o What is an atom? (the smallest particle that has the properties of an

element) We are going to use these candies to show the difference betweenelements, compounds, and mixtures

ELEMENTS: o Separate the different types of atoms into pileso By separating the different atoms from each other we have created

piles of elements

8/14/2019 Elements,Compounds,Mix[1] Candy ActivityALPS

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o What is an element? (a substance that cannot be broken down intoa simpler substance by a chemical reaction)

o just like your candy they cannot be broken down anymore andstill be candy!

COMPOUNDS: o How will we make compounds?o What do the toothpicks represent? (bonds)o Bonds hold compounds together so use your bonds to make a

compound of your choiceo Draw this compound on the handout (represent all the colors in the

compound)o Have some students share with the class their compound point

out many of the structures they have made occur in chemistry likecubes and rings

o Define compound: a substance made of atoms of more than oneelement bound together

o These elements and compounds can be known as PURESUBSTANCES

If you only have iron with iron, it is pureIf you have only water with water, it is pureTO BE PURE ONLY ONE SUBSTANCE IS PRESENT

MIXTURES: o Using compounds and elements make a mixtureo Draw this mixture in the space provided on the handouto What are the differences between mixtures and compounds?

(mixtures are many elements and/or compounds close together,

while compounds are held together by chemical bonds) Go through the list below again to determine if substances are elements,

compounds, or mixtures Tell them the correct answers