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Unformatted text preview: Name Period Date FROM FEW COME MANY Look around at the many kinds of matter. There are more kinds of matter in this world than we can count. Scientists haVe
studied millions of different kinds of matter and ﬁnd that all can be broken down into simpler substances except for about 100
kinds of pure substances. These 100 kinds of pure substances are called elements. Hydrogen, oxygen, carbon, and zinc are just
a few of these elements. Atoms are the smallest particle of an element that still has it’s properties. There is a different kind of
atom for each element. That means there are about 100 different kinds of atoms. The millions of different kinds of matter in the world are all made from just these 100 kinds of atoms. This can only be true if one hundred atoms can combine in many ways. 1. What is an element? 2. What is an atom? 3. How can just 100 different kinds of atoms make up the millions of kinds of matter? 4. Suppose you had 4 different kinds of atoms. How many different ways would you guess 4 atoms can be combined? In your activity today, nuts and bolts will represent different kinds of atoms. Using these atoms you will ﬁnd out how many
combinations are possible. To keep the problem simple, you will work with only four different kinds of atoms.
Your partner will be your opponent. The bag you are given should contain 6 long bolts, 6 short bolts, 15 hex nuts, and 15 black hex nuts. Put the four kinds of nut and bolt atoms in separate piles on your table.
5. Since each pile has only one kind of atom, The substance each pile represents would be a(n)
6. How many different kinds of atoms are represented by the nuts and bolts? 7. How many different kinds of elements are represented by the nuts and bolts? Today you will take part in a contest that will have 2 rounds. In the ﬁrst round each of you will use 2 short-bolt atoms and 4
black hex-nut atoms. You want to ﬁnd more different combinations of these atoms than your opponent ﬁnds. Carefully read and follow the GAME RULES: 1. To be counted as a combination, at least two atoms
(nuts and bolts) must be held together by the threads. For example: II. No two combinations can have exactly the same kind and number of nuts and bolts. (just changing order doesn’t count). III. Once a combination is made, draw it, then take it apart to make another. You must be able to connect combinations you
draw. IV. Make your drawings like the ones shown: @— W ﬁj—EH)
V. The w1nner Of the round WIH be the person hon-bolt atom hex-nut tom long-bolt atom f black h x—nut atom who has drawn the most valid combinations. All right, you and your opponent should be ready to start. Remember, you may only use 2 short bolt atoms and 4 black hex nut
atoms for round‘one and you must stop after 5 minutes. Round 1
combinations: 8.. How many combinations were you able to make? How many kinds of atoms did you use in round one? Next you will test your prediction from question 4. For round 2, reread the game rules. This time you and your opponent will each need 2 short—bolt atoms, 2 long-bolt atoms, 5 black
hex—nut atoms, and 5 hex-nut atoms. In this round you will have 15 minutes. Draw your combinations on the back of this paper. At
the end of 15 minutes, stop and answer questions below. 9. How many combinations were you able to make? How many kinds of atoms did you use in round two? 10. Could you have made more if you had unlimited time? Could you have made more if the bolts were longer?
Compare your answer to question 9 with others in the class. You should have found that by using just 2 more kinds of atoms in the
second round, you could make many, many more combinations. Imagine what 2 more kinds of atoms would do. . .and then 2 more! Our alphabet has just 26 letters and thick dictionaries show what a huge number of different combinations can be made! Remember,
when two different atoms combine they create a new substance with entirely new properties! With 100 different kinds of atoms
there are millions of combinations and therefore millions of new substances that can be made! 11. Look at your drawings below. Explain why none of the drawings represents an element 12. What do we call a substance that is not a pure substance (element) Round 2
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- Fall '10