Unit 1 Test Review Answers

Remember sig figs and units – if your answer does not look exactly like this, there is a good chance you will lose some points!

For all unit conversions, you must show your factor label conversions – just getting the correct answer will not earn you full credit for the problem.

For density, make sure you show the problem worked out algebraically and then substitute in the numbers or you will lose some points.

1. 84x10-6Mg 2. 7.894x106uL 3. 1.5mm/s 4. 28,000cm or 2.8x104cm 5. 771s 6. 0.00582cm3 or 5.82x10-3cm3 7. Sig Figs a. 4 b. 4 c. 4 d. 5 e. 5 f. 6 8. 14.2cm3 9. 670cm3 10. 1.33g/mL 11. Iron 12. Chemical/Physical Changes a. Physical b. Chemical c. Physical d. Chemical e. Chemical f. Physical g. Chemical h. Physical