Substances that are created and come out of a chemical reaction

Brief description of a iceberg, in your OWN words

How does burning fire consume atmospheric oxygen differently than a nail rusting

What happens when the action force of a bat strikes a baseball? The reaction force accelerates the bat in a direction opposite that of the ball. The reaction force accelerates the bat in a upward direction.

Amount of liquid measured in L or Lm

How many valence electrons does a helium atom have? consult the periodic table.

A canister of acetylene has a volume of 42 L. The temperature of the acetylene is 305 K and the pressure is 780 torr. Determine the amount of gas in the canister

In terms of the scientific method, the purpose of an experiment is: form a hypothesis test a hypothesis form a conclusion develop data

Which layer of the earth can only be studied by indirect means

Is Euglena heterotroph or autotroph

What is the mass of 5000. atoms of silicon