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ANSWERS to Lesson 1.2.4 Activity Questions. 1. What characteristics did you use for sorting the cards?. # of spokes, mass , color. 2. What patterns appear in your arrangement? List at least three. As you go down a group, the # of spokes stays the same.
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1. What characteristics did you use for sorting the cards? # of spokes, mass, color
2. What patterns appear in your arrangement? List at least three. • As you go down a group, the # of spokes stays the same. • As you go across a row, the # of spokes goes up by one. • As you go across a row or down a group, the mass gets larger.
3. Where did you put H and He? What was your reasoning for their placements? On the far left and far right. # of spokes! (hydrogen) Unreactive (helium)
4. Did you notice any cards that didn’t quite fit, or that seemed out of order? A couple masses didn’t go in order.
Making Sense Qs: Look @ the cards you have arranged—where does germanium belong in the table? Which card seems to be the most accurate to you? What is your reasoning?
What would you add to the three empty corners to complete the card?
Check-in: Which of the following elements would you find in the same group on the periodic table? Explain your thinking. Silvery, React slowly or don’t react with water, ___Cl2
Check-in: Compare the pairs of elements below. Circle the pair that would have the most similar properties. Explain your reasoning. Na and Rb Na and Mg O and Ne They are in the same group (vertical column)