1. Observe: Type "H2" into the Reactants box and hit Enter on your keyboard. Note that the formula is shown as H₂ below. The small "2" in H₂ is a subscript. A. What does the "2" in H₂ represent? B. In general, what do you think a subscript in a chemical formula tells you? C. Try typing in other subscripts next to the H, such as 3, 4, and 5. Is your answer to question B still true? Explain.

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Chapter1: Chemical Foundations
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1. Observe: Type "H2" into the Reactants box and hit Enter on your keyboard. Note that the
formula is shown as H₂ below. The small "2" in H₂ is a subscript.
A. What does the "2" in H₂ represent?
B. In general, what do you think a subscript in a chemical formula tells you?
C. Try typing in other subscripts next to the H, such as 3, 4, and 5. Is your answer to
question B still true? Explain.
2. Count: Clear the Reactants box, and type in a more complex chemical formula: "Ca(OH)2."
Look at the number of
A. How many of each type of atom do you see? Ca:
B. In general, what happens when a subscript is found outside of parentheses?
C. Try typing in other subscripts next to the (OH), such as 3, 4, and 5. Is your answer to
question B still true? Explain.
AgCl3Cu2
Ba(ASO4)2
(NH4)3PO4
MnPba(Si₂O7)3
3. Practice: For each of the real chemical formulas below, calculate how many of each element
there are. Check your answers for the first three formulas using the Gizmo.
Ag:
Ba:
N:
Mn:
CI:
As:
H:
Pb:
Reproduction for educational use only. Public sharing or posting is prohibited.
Cu:
O:
P:
O:
Si:
DELL
O:
H:
O:
©2018 ExploreLearning All rights reserved
O
Cel
Transcribed Image Text:TE/ 1. Observe: Type "H2" into the Reactants box and hit Enter on your keyboard. Note that the formula is shown as H₂ below. The small "2" in H₂ is a subscript. A. What does the "2" in H₂ represent? B. In general, what do you think a subscript in a chemical formula tells you? C. Try typing in other subscripts next to the H, such as 3, 4, and 5. Is your answer to question B still true? Explain. 2. Count: Clear the Reactants box, and type in a more complex chemical formula: "Ca(OH)2." Look at the number of A. How many of each type of atom do you see? Ca: B. In general, what happens when a subscript is found outside of parentheses? C. Try typing in other subscripts next to the (OH), such as 3, 4, and 5. Is your answer to question B still true? Explain. AgCl3Cu2 Ba(ASO4)2 (NH4)3PO4 MnPba(Si₂O7)3 3. Practice: For each of the real chemical formulas below, calculate how many of each element there are. Check your answers for the first three formulas using the Gizmo. Ag: Ba: N: Mn: CI: As: H: Pb: Reproduction for educational use only. Public sharing or posting is prohibited. Cu: O: P: O: Si: DELL O: H: O: ©2018 ExploreLearning All rights reserved O Cel
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