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Bio 011

Authored by Gabby .

Biology

University

Used 8+ times

Bio 011
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73 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The name of the element with 9 electrons, 8 protons, and 10 neutrons is

fluorine

oxygen

nitrogen

lithium

neon

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fluorine has 9 electrons and can form a maximum of_________ bonds with other elements.

1

3

4

8

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is likely to be a polar bond?

Cl-Cl

P-H

C-O

C-H

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When electrons are shared in a bond, this is a(n)

DNA bond

covalent bond

ionic bond

cation bond

hydrogen bond

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following sets are LEAST likely to be attracted to each other?

two nonpolar molecules

two polar molecules

a positive ion and a negative ion

water and an ionic compound (e.g. table salt)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT true about hydrogen bonding?

They are very strong true bonds that involve two or more metals

They are important for maintaining the structure of DNA

They involve hydrogen interacting with N, F, O, and Cl

They are important for interactions between different water molecules

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does ice float in liquid water?

Liquid water has more kinetic energy and holds up the ice.

Hydrogen bonds are more stable at colder temperatures and water forms a crystalline matrix which is less dense than liquid water.

The air bubbles in ice allow it to float.

Nonpolar covalent bonds in ice molecules keep the atoms further apart than in liquid water.

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