FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 2: Atoms,Ions,and Molecules

Show Answer

Share

---

All types

Filters

Study Flashcards

Question 31

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following is an accurate description of hydrocarbons

A) Most of them contain phosphorus.
B) They are nonpolar molecules.
C) Most of them contain sulfur.
D) They are polar molecules.

E) None of the above
F) A) and C)

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following statements accurately describes electrons

A) They are found inside the nucleus and have a positive charge.
B) They are in orbitals outside the nucleus and have a positive charge.
C) They are found inside the nucleus and have a negative charge.
D) They are in orbitals outside the nucleus and have a negative charge.

E) B) and C)
F) A) and D)

Correct Answer

verified

Show Answer

Question 33

Short Answer

Review LaterAdd Note

When the pH of an acidic solution is brought to 7.0,that change is called __________.

On the periodic table,beryllium sits above magnesium and to the right of lithium.Given that magnesium has two electrons in its outer shell and lithium has one,how many electrons would you predict beryllium has in its outer shell

Amino acids such as alanine contain hydrocarbons as side groups,and these amino acids engage in hydrophobic interactions with each other.Such amino acids are

Phospholipids are described as

A hydroxide ion carries a negative charge.

If an ionic compound formed between an element from the first column of the periodic table and another from the sixth column,you would expect the compound to include

The simple sugar glucose is an example of a

Two atoms that have the same chemical characteristics but different atomic masses are considered __________.or

When extreme temperature changes a protein's shape so much that it can no longer perform its usual function,that change is known as __________.

A polymer is made up of several subunits called __________.

The hydrogen bonds in a sample of water result in ________ cohesion and a _____ heat of vaporization.

Name and describe the four main categories of lipids,and compare and contrast their structures and functions.

A base is described as a proton donor.

While a runner is in a marathon,his or her liver will have to free some stored energy to keep blood sugar levels adequate;the liver will liberate this energy by way of a process called

Explain how the structure of an oxygen atom with an atomic mass of sixteen would be diagrammed.Include the number of subatomic particles in each part of the atom.

What is the number of covalent bonds that an atom of nitrogen can form within a molecule

The half-life of a radioisotope is at least one day and at most ten years.

Another name for the outer electron shell of an atom is the ________ shell.