Carbon atoms are able to: a. give off electrons to form negative carbon ions b. bond with other carbon atoms to form long chains
c. gain four extra electrons to form positive carbon ions d. form five single covalent bonds with their valence electrons

Which pair of sentences is describing the same velocity? a. a car is parked. a car is moving in circles. b. a bus drives 40 miles per hour north. a truck drives 50 miles per hour north. c. a boy walks east at 6 kilometers per hour. a girl walks west at the same speed as the boy. d. valerie rides her bike south at 8 kilometers per hour. owen jogs south at 8 kilometers per hour.