Chapter 3 rawr Flashcards
What is an element? Give an example.
See Page 53.
Is water an element? Why or why not?
At the end of Page 53.
Compare cells and elements.
First part of Page 54.
How many elements are there? Name the two most abundant elements in the universe and all the abundant elements in the Earth’s crust and in the human body.
Last Part of Page 54.
By scientific definition, do you think air, earth, fire, water, gold, and wood are elements?
Think About it Page 54.
How are elements named? Give an example by using a table
Page 55.
What are the cases and properties of chemical symbols?
First part of Page 56.
What is a chemical reaction?
Key Points Page 56.
Name the chemical symbols of Lead, Mercury, and Chlorine. Then, state their color, then whether they are solid/liquid/gas, and then whether they are shiny or not shiny.
Table 3.2 on Page 57
State some properties that different elements vary in.
Last part of Page 57.
How can elements be classified?
Pages 58-59.
Who was the Russian scientist to arrange the known elements during his time?
Science Tidbit Page 59
Try it Out Page 61.
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What are some of the uses of elements?
Pages 62-63.
What are most of the things around us made up of?
Page 63 - 3.3 - Last Para
What is a compound? Give examples. How can the chemical reactions to form compounds be described? Give examples.
Pages 63-65.
What are the substances not listed on the Periodic Table?
Page 63.
State some of the similar properties of compounds. Give an example for each one.
Pages 66-68.
How can we find the fixed proportion of the mass of an element?
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Try it Out Page 68.
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Describe some ways we can form compounds. Give examples for each method of formation.
Pages 69 and 70.
Try it Out Page 70.
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Think About It Page 59
rawr
Answer the following questions:
a. Describe the discovery of elements.
b. What are the similarities between Helium and neon?
c. What happens when calcium carbonate is heated?
d. Write down the 4 chemical reactions.
e. What states are mercury and bromine at room temperature?
f. Who were the first chemists and what did they do?
