BIO FINAL STUDY GUIDE WITH
COMPLETE ANSWERS |LATEST
UPDATE { GRADED A+}
1. What are some characteristics of acidic solutions - ✔✔Acidic solutions:
sour taste, lemons, grapefruit juice
Characteristics of basic solutions - ✔✔Basic: sharp, bitter taste, feels
soapy and slippery
2. What does the pH scale measure? - ✔✔The concentration of hydrogen
ions.
3. What causes ocean acidification? - ✔✔Ocean acidification is caused by
carbon dioxide gas in the atmosphere dissolving into the ocean.
4. Why is climate change a triple threat to the oceans? - ✔✔1 More acidic
2. Warmer 3. Less oxygen
5. What is the chemical formula for water? - ✔✔H2O
How many electrons does oxygen have? - ✔✔8
, 6. How many electrons does hydrogen have? - ✔✔1
7. Which element is more electronegative? Hydrogen or Oxygen? -
✔✔Oxygen
8. What is the definition of a covalent bond? - ✔✔An attraction between
two electrons and is formed by equal sharing of electrons from both
participating atoms.
9. Which element from the periodic table is held together by cohesive
forces? - ✔✔mercury
10. Why is water considered to be a universal solvent? - ✔✔It dissolves
more substances than any other liquid.
Polar compound - ✔✔electrons are not equally shared, has negative and
positive poles, water-loving, Ex: water
nonpolar compound - ✔✔Equally shared electrons, no poles, water-
fearing, Ex: Ethane
cohesion - ✔✔Attraction between molecules of the same substance
adhesion - ✔✔An attraction between molecules of different substances
surface tension - ✔✔water is pulled together creating the smallest surface
area possible
COMPLETE ANSWERS |LATEST
UPDATE { GRADED A+}
1. What are some characteristics of acidic solutions - ✔✔Acidic solutions:
sour taste, lemons, grapefruit juice
Characteristics of basic solutions - ✔✔Basic: sharp, bitter taste, feels
soapy and slippery
2. What does the pH scale measure? - ✔✔The concentration of hydrogen
ions.
3. What causes ocean acidification? - ✔✔Ocean acidification is caused by
carbon dioxide gas in the atmosphere dissolving into the ocean.
4. Why is climate change a triple threat to the oceans? - ✔✔1 More acidic
2. Warmer 3. Less oxygen
5. What is the chemical formula for water? - ✔✔H2O
How many electrons does oxygen have? - ✔✔8
, 6. How many electrons does hydrogen have? - ✔✔1
7. Which element is more electronegative? Hydrogen or Oxygen? -
✔✔Oxygen
8. What is the definition of a covalent bond? - ✔✔An attraction between
two electrons and is formed by equal sharing of electrons from both
participating atoms.
9. Which element from the periodic table is held together by cohesive
forces? - ✔✔mercury
10. Why is water considered to be a universal solvent? - ✔✔It dissolves
more substances than any other liquid.
Polar compound - ✔✔electrons are not equally shared, has negative and
positive poles, water-loving, Ex: water
nonpolar compound - ✔✔Equally shared electrons, no poles, water-
fearing, Ex: Ethane
cohesion - ✔✔Attraction between molecules of the same substance
adhesion - ✔✔An attraction between molecules of different substances
surface tension - ✔✔water is pulled together creating the smallest surface
area possible
