<p> Unit 1 Test Review Answers</p><p>Remember sig figs and units – if your answer does not look exactly like this, there is a good chance you will lose some points!</p><p>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.</p><p>For density, make sure you show the problem worked out algebraically and then substitute in the numbers or you will lose some points.</p><p>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</p>