The formation of water from oxygen and hydrogen can be described in the following word equation:
oxygen gas+ hydrogen gas - liquid water
In this reaction, liquid water is the
Select one:
•only compounds
•product
•waste
•reactant

If a 60-g object has a volume of 30 cm3, what is its density? 2 g/cm3 0.5 cm3/g 1800 g * cm3 none of the above

If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.

The modern periodic table has groups.