FREE CHEMISTRY AND STUDY GAMES ABOUT CHEM 100

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FREE CHEMISTRY AND STUDY GAMES ABOUT CHEM 100

FINAL EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -67 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: (T/F) all samples of pure copper (Cu) will have the same density, regardless of size.

Answer:

True

Question 2: (T/F) Cations are positively charged ions.

Answer:

True Question 3: (T/F) Outer (valance) electrons are the most important electrons when atoms form chemical bonds.

Answer:

True

Question 4: Is gasoline a homogeneous mixture or heterogeneous mixture?

Answer:

homogeneous

Question 5: Is cutting firewood a chemical or physical change?

Answer:

physical

Question 6: (T/F) Electrons are found in the nucleus of the atom.

Answer:

False

Question 7: Is Si a metal, metalloid, or nonmetal?

Answer:

metalloid (semi-metal) Question 8: What chemical substance is an anticancer drug that resembles substance essential to normal body functions

Answer:

antimetabolite Question 9: Is chocolate chip ice cream a homogeneous mixture or heterogeneous mixture?

Answer:

heterogeneous

Question 10: Is tea a substance or mixture?

Answer:

mixture Question 11: (T/F) Toxic chemicals are added to ethanol not intended for human consumption (i.e. for use in lab) to prevent abuse and for taxation purposes.

Answer:

True

Question 12: (T/F) Electrons have the same mass as protons and neutrons.

Answer:

False

Question 13: Is Na a noble gas, halogen, or alkali metal?

Answer:

alkali metal Question 14: (T/F) One conclusion from Rutherford's gold foil experiment was that atoms contain a lot of empty space.

Answer:

True Question 15: (T/F) Cocaine, caffeine, and nicotine are all in the same class of drugs: stimulants.

Answer:

True

Question 16: (T/F) The US is one of the top energy consumers in the world.

Answer:

True

Question 17: What's the element symbol for sodium?

Answer:

Na

Question 18: What's the element symbol for iodine?

Answer:

I

Question 19: Is Ne a noble gas, halogen, or alkali metal?

Answer:

noble gas Question 20: (T/F) Gases can be compressed (have their volume changed) because the particles are NOT packed closed together.

Answer:

True

Question 21: (T/F) The formula of the ionic compound that forms between K and O is KO

Answer:

False Question 22: (T/F) A nuclear power plant has the potential to explode like a nuclear bomb.

Answer:

False

Question 23: Is snow melting a chemical or physical change?

Answer:

physical Question 24: (T/F) According to the law of conservation of mass, matter is neither created nor destroyed in a chemical reaction.

Answer:

True

Question 25: Is C a metal, metalloid, or nonmetal?

Answer:

nonmetal

Question 26: What's the element symbol for iron?

Answer:

Fe Question 27: (T/F) According to their positions on the periodic table, the elements O and Se will have some similar chemical properties.

Answer:

True Question 28: (T/F) Elevated levels of acid rain has endangered marine life in some lakes in Canada and the US.

Answer:

True