17d • General discussion
Chemistry Practice: Ionic Compounds, Sig Figs & Conversion Factors
🦋 PART 1: Ionic Compounds (Questions 1–8)
1. Write the chemical formula for sodium chloride.
2. Write the chemical formula for calcium fluoride.
3. Name the ionic compound K₂O.
4. Name the ionic compound MgBr₂.
5. Write the formula for aluminum oxide.
6. Write the name of FeCl₃.(Hint: iron has more than one possible charge.)
7. Write the formula for copper(II) sulfate.
8. Which compound is written correctly?a) Na₂Clb) CaCl₂c) AlO₃d) Mg₂O
🦋 PART 2: Significant Figures (Questions 9–14)
9. How many significant figures are in 0.00450?
10. How many significant figures are in 120.0?
11. Round 3.45678 g to 3 significant figures.
12. Round 0.009876 km to 2 significant figures.
13. Calculate and report the answer with the correct number of significant figures:
2.5×4.322.5 \times 4.322.5×4.32
14. Calculate and report the answer with the correct number of significant figures:
12.4+3.16+0.812.4 + 3.16 + 0.812.4+3.16+0.8
🦋 PART 3: Conversion Factors (Questions 15–20)
15. Convert 250 cm to meters.
16. Convert 3.5 km to meters.
17. Convert 45 grams to milligrams.
18. Convert 0.75 liters to milliliters.
19. A solution has a volume of 125 mL. Convert this volume to liters.
20. A patient weighs 68.0 kg. Convert this mass to grams, using correct significant figures.
show your work and see you soon!! 🦋☀️✨
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Chemistry Practice: Ionic Compounds, Sig Figs & Conversion Factors
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