Hydrogen gas and oxygen gas react to form liquid hydrogen peroxide. which statement is true about the reaction? a. the same atoms are present, so the chemical properties remain the same. b. the atoms of the reactants combine to form a new substance. c. the two gases mix together, but a new substance does not form. d. the product that is formed has the same physical properties as the reactants.

B. The atoms of the reactants have combined to form a new substance.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

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