Exam 2: Fundamental Building Blocks: Chemistry, water, and Ph

Oil spills in the ocean are often treated with chemical dispersants.These materials are similar to detergents in that the molecules have both hydrophilic and hydrophobic portions.Based on this,predict what will happen when chemical dispersants are used to treat oil spills.

How are ions formed? Why do ionic compounds readily dissolve in water?

Which elements make up the majority of the human body?

Isotopes differ from each other in the number of protons that they possess.

Sodium chloride (NaCl)crystals (table salt)form as a result of:

The ionic bond of sodium chloride is formed as a result of:

If a neutral atom has an atomic number of 10,then we know that it has:

A single covalent chemical bond represents a sharing of ________ electrons between two atoms.

You shake up a bottle of vinegar and oil dressing to mix it each time you use it.The reason you need to do this is that:

Explain how a polar molecule,such as water,can have a difference in electrical charge but is also electrically neutral.

When sodium chloride dissolves in water,the sodium and chloride ions are pulled into solution by:

The electrons of an atom contribute significantly to the mass of an atom.

Molecules of water stick to each other because:

Isotopes are atoms of the same element that differ in their:

Which of the following would form the fewest covalent bonds?

The number of atoms coming out of a chemical reaction must equal the number of atoms going into a chemical reaction.This follows the principle of:

As the difference in the electronegativity between atoms forming a chemical bond increases,the:

Refer to the figure below, and then answer the question that follows. -Hydrogen,deuterium,and tritium are considered the same element because:

Two hydrogen atoms (atomic number 1)form a covalent bond.Which of the following is true?