Unknown compounds can usually be identified based solely on their
a. chemical properties
b. reactivity
c. volatility
d. physical properties

How many joules of heat are absorbed to raise the temperature of 650 grams of water from 5.00c to it's boiling point, 100c

In an energy pyramid, which level has the most available energy?

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.