The atoms of which element will gain electrons to form an ion? oxygen
calcium
lithium
mercury

Detrimental the length of the object shown 1. 97.8mm 2. 97.80 mm 3. 97mm 4. 98mm

Match the following items. match the items in the left column to the items in the right column. 1. 1/1,000 precision 2. uncertainty value of measurement milli- 3. 1,000 accuracy 4. instrument to measure volume balance 5. degree of exactness of a measurement centi- 6. instrument to measure mass graduated cylinder 7. correctness of a measurement ± value 8. 1/100 kilo-

The temperature of a substance is a measure of the 1. average kinetic energy of its particles 2. average potential energy of its particles 3. ionization energy of its particles 4. activation energy of its particles