Chapter 4 Quiz

A  none of these.

B  35

C  45

D  80

E  79

A  none of these.

B  Be

C  H

D  C

E  He

A  Atoms are the basic building block of nature.

B  All of these statements are true.

C  Atoms are responsible for the sensation of smell.

D  Atoms compose all matter.

E  An atom is the smallest identifiable unit of an element.

A  Cations always have the same number of protons as electrons.

B  All statements are correct.

C  Cations are formed when an atom loses electrons.

D  Cations are positive ions and anions are negative ions.

E  Anions are formed when an atom gains electrons.

A  must have exactly 18 electrons.

B  is an isotope of sodium.

C  contains exactly 18 neutrons.

D  none of these

E  has 34 protons.

F    

A  The atomic mass would be 17.

B  The atomic mass would be less than 16.

C  The atomic mass would be 18.

D  The atomic mass would be more than 18.

A  37 protons, 17 neutrons

B  17 protons, 20 neutrons

C  17 protons, 37 neutrons

D  none of these

E  20 protons, 17 neutrons

A  chromium, Cr

B  potassium, P

C  manganese, Mn

D  gold, Au

E  calcium, Ca

A  Electrical charge is a fundamental property of protons and electrons.

B  Positive-positive or negative-negative charges repel each other.

C  Positive and negative electrical charges attract each other.

D  All of these statements are true

E  Positive and negative charges cancel each other so that a proton and electron, when paired, are charge neutral.

A  Electrical charge is a fundamental property of protons and electrons.

B  There are as many electrons outside the nucleus as there are protons inside the nucleus in a neutral atom.

C  All of these statements are consistent.

D  Most of the atom’s mass and all of its positive charge is contained in a small core called the nucleus.

E  Most of the volume of the atom is empty space occupied by tiny, negatively charged electrons.

A  Most of the atom’s mass and all of its positive charge is contained in a small core called the nucleus.

B  All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.

C  All of these are part of the atomic theory.

D  Atoms combine in simple, whole-number ratios to form compounds.

E  Each element is composed of tiny indestructible particles called atoms.

A  none of these

B  ancient Greek philosopher who proposed that matter was continuous

C  proposed the modern Atomic Theory

D  created the modern periodic table

E  discovered the existence of electrons