FREE AND STUDY GAMES ABOUT MASTERINGBIOLOGY

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FREE AND STUDY GAMES ABOUT MASTERINGBIOLOGY

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -15 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The unequal sharing of electrons within a water molecule makes the water molecule _____.

Answer:

polar Question 2: a substance that accepts H+ when they are in excess and donates H+ when their concentration drops is called

Answer:

a buffer Question 3: Which of these refers to atoms with the same atomic number but different atomic masses?

Answer:

These atoms are isotopes.Question 4: the term for a solution that has an equal concentration of H+ OH- is...

Answer:

neutral

Question 5: the higher the pH number the higher concentration of what to a solution

Answer:

OH- Question 6: The tendency of an atom to pull electrons toward itself is referred to as its _____.

Answer:

electronegativity

Question 7: An acid is a compound that donates what to a solution?

Answer:

H+ Question 8: the term for a solution with a low pH #,such as lemon juice or vinegar is...

Answer:

acidic Question 9: the term for a solution with a high pH number, such as, ammonia or bleach is ..

Answer:

basic

Question 10: In a neutral solution the concentration of _____.

Answer:

hydrogen ions is equal to the concentration of hydroxide ions Question 11: Each water molecule is joined to _____ other water molecules by ____ bonds.

Answer:

four ... hydrogen Question 12: What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?

Answer:

6

Question 13: A(n) _____ refers to two or more atoms held together by covalent bonds.

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a molecule Question 14: Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons does fluorine have?

Answer:

10 Question 15: An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11.How many protons does boron have?

Answer:

5