BIO111 Chapter 2

BIO111 Chapter 2

Chemistry of Life

Multiple Select

What two things does matter do?

• occupies space

• Is visible

• Is made of more than one element

• Has mass

Open Ended

What are the 4 most common elements of living organisms?

Multiple Choice

Which subatomic particle has a +1 charge?

• Protons

• Neutrons

• Electrons

Multiple Select

Which subatomic particles have a mass value?

• Protons

• Neutrons

• Electrons

Multiple Choice

Which subatomic particle is not part of the nucleus?

• Protons

• Neutrons

• Electrons

Multiple Choice

Isotopes have a different number of:

• Protons

• Neutrons

• Electrons

Multiple Choice

Which subatomic particle is identifiable to the element?

• Protons

• Neutrons

• Electrons

Multiple Choice

Here are 3 isotopes of an element:

This element is:

• Calcium

• Carbon

• Californium

• Cerium

Multiple Choice

Here are 3 isotopes of an element:

The number 6 refers to the:

• Chemical Symbol

• Atomic number

• Atomic mass

• Atom charge

Multiple Choice

Here are 3 isotopes of an element:

The numbers 12, 13, and 14 refer to:

• Chemica symbol

• Atomic number

• Atomic mass

• Atom charge

Multiple Choice

How many neutrons are in the second isotope?

• 6

• 7

• 8

• 9

Multiple Choice

Water is made with what type of bond?

• Covalent bonds

• Double covalent bonds

• ionic bonds

Multiple Choice

Atmospheric oxygen exists with which type of bonds?

• Covalent bonds

• Double covalent bonds

• Ionic bonds

Multiple Select

Which of these are nonpolar molecules?

• Water

• Carbon dioxide

• Methane

• Oil

Multiple Choice

The bonds within a single water molecule are ________, whereas the bonds between multiple water molecules are_________.

• polar covalent;

  polar covalent

• ionic;

  hydrogen bonds

• hydrogen bonds;

  polar covalent

• polar covalent;

  hydrogen bonds

Multiple Choice

Water freezing causes the hydrogen bonds to form a unique crystalline structure in water molecules causing solid water to be_____________ than liquid water

• more dense

• less dense

Multiple Choice

Water's high specific heat aids in the maintenance of which quality of life?

• reproduction

• energy processing

• homeostasis

• response to stimuli

Multiple Choice

Water attracted to other water is _______.

Water attracted to other molecules is________.

• adhesion;

  cohesion

• cohesion;

  adhesion

Poll

Do all buffers strive to keep internal conditions at a pH of 7 (neutral)?

• yes

• no

Multiple Choice

How many valence electrons does carbon have?

• 1

• 2

• 3

• 4

Multiple Choice

Which type of geometric isomer unsaturated fat is worse for your diet?

• cis unsaturated

• trans unsaturated

​Summary:

• ​Atoms, Isotopes, Ions, and Molecules

• ​The Periodic Table

• ​Electron shells

• ​Chemical Reactions and Molecules

• ​Ions and Ionic Bonds

• ​Covalent Bonds

• ​Other Bonds and Interactions

• ​Water

• ​pH, Buffers, Acids, and Bases

• ​Carbon