Chapter 2 Question Preview (ID: 47691)


Chapter 2 Review. TEACHERS: click here for quick copy question ID numbers.

Atoms are made up of
a) protons
b) neutrons
c) electrons
d) all of the above

An atom that gains or loses an electron is called a(n)
a) ion
b) isotope
c) covalent bond
d) hydrogen bond

Atoms always have a positive charge
a) True
b) False
c)
d)

Adhesion is the attraction between different substances
a) True
b) False
c)
d)

Water molecules attract nonpolar molecules such as oil.
a) True
b) False
c)
d)

A substance that is composed of only one type of atom is called a(n)
a) atom
b) cell
c) element
d) molecule

All matter is composed of
a) cells
b) neutrons
c) carbon
d) atoms

Nonpolar molecules have
a) one negative pole
b) one positive pole
c) a negative and positive pole
d) no negative or positive poles

Due to polarity, substances that dissolve best in water contain
a) nonpolar bonds
b) ionic bonds
c) polar bonds
d) both b and c

Sharing of electrons in the outer energy levels of two atoms
a) results in ion formation
b) occurs in covalent bonds
c) only occurs if both atoms are of the same element
d) only occurs in water

Which of the following is NOT a macromolecule?
a) lipid
b) nucleic acid
c) water
d) carbohydrate

Polysaccharides are
a) carbohydrates
b) lipids
c) fats
d) proteins

Long chains of amino acids are found in
a) fats
b) proteins
c) nucleic acids
d) DNA

All organic molecules contain which element?
a) oxygen
b) hydrogen
c) nitrogen
d) carbon

The two types of nucleic acids are:
a) lipids and waxes
b) DNA and RNA
c) polysaccharides
d) monosaccharides

The two strands of the DNA molecule are held together by
a) ionic bonds
b) covalent bonds
c) hydrogen bonds
d) none of the above

What does DNA store?
a) hereditary information
b) fats
c) carbohydrates
d) proteins

Chemical reactions that occur in cells are called
a) biochemical reactions
b) ionic bonding reactions
c) physical reactions
d) exothermic reactions

Water molecules attract nonpolar molecules such as oil.
a) True
b) False
c)
d)

The negatively charged particle of an atom is called the
a) proton
b) electron
c) neutron
d) isotope

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