A person has a mass of 1000g and an

acceleration of 20 m/s/s. What is the force on

the person?

A.) 20000 N

B.) 2000N

C.) 20N

D.) 200N

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic structure. [6 mark]

A construction company recently filled in a local pond to build new houses. During the following weeks, a local scientist noticed a decline in the mosquito population in the area.

What are the 3 states of matter

Name one physical property that could be used to distinguish chlorine from oxygen

Explain why a tire or ballon expands when air is added

Under the Implied Consent law, which of the following is true? A. Your driving privileges will be suspended if you refuse a chemical test to measure your alcohol level. B.

If 0.366 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

A conical, flat-bottomed flask with a narrow neck that can be used for heating, mixing, watching reactions, and swirling, not for measuring

Answer 1. the law of conservation of mass states that mass is neither created nor destroyed in an ordinary chemical reaction. when an iron nail rusts, it seems to get heavier in mass. does the iron nail follow the law of conservation of mass?