Question 1

Which subatomic particle will be attracted to a negatively charged metal plate?

Accepted Answer

A)  a proton 
B)  a neutron 
C)  an electron 
D)  All of these particles will be attracted to the metal plate. 
A)  a proton 
B)  a neutron 
C)  an electron 
D)  All of these particles will be attracted to the metal plate. A

Question 2

_____ allows scientists to construct images showing how atoms combine to form molecules.

Accepted Answer

A)  X-ray crystallography 
B)  Scanning tunneling microscopy 
C)  Cathode ray tubes 
D)  Atomic theory 
A)  X-ray crystallography 
B)  Scanning tunneling microscopy 
C)  Cathode ray tubes 
D)  Atomic theory A

Question 3

What two particles reside in the nucleus?

Accepted Answer

A)  protons and electrons 
B)  electrons and neutrons 
C)  protons and neutrons 
D)  futons and protons 
A)  protons and electrons 
B)  electrons and neutrons 
C)  protons and neutrons 
D)  futons and protons C

Question 4

The law of conservation of _____ tells us that matter is not created or destroyed in a chemical reaction.

Accepted Answer

A)  energy 
B)  mass 
C)  atoms 
D)  compounds 
A)  energy 
B)  mass 
C)  atoms 
D)  compounds

Question 5

An atom that loses an electron is:

Accepted Answer

A)  known as a cation. 
B)  known as an anion. 
C)  still called an atom. 
D)  known as an isotope. 
A)  known as a cation. 
B)  known as an anion. 
C)  still called an atom. 
D)  known as an isotope.

Question 6

The atomic number tells us:

Accepted Answer

A)  the sum of all the particles in the nucleus. 
B)  the number of electrons in a neutral atom. 
C)  the number of protons in a nucleus. 
D)  both the number of electrons in a neutral atom and the number of protons in a nucleus . 
A)  the sum of all the particles in the nucleus. 
B)  the number of electrons in a neutral atom. 
C)  the number of protons in a nucleus. 
D)  both the number of electrons in a neutral atom and the number of protons in a nucleus .

Question 7

Which subatomic particle will be attracted to a positively charged metal plate?

Accepted Answer

A)  a proton 
B)  a neutron 
C)  an electron 
D)  All of these particles will be attracted to the metal plate. 
A)  a proton 
B)  a neutron 
C)  an electron 
D)  All of these particles will be attracted to the metal plate.

Question 8

A certain element is composed of two isotopes,having the mass and abundance shown in the table.What is the average atomic mass for this element? Mass
Abundance
Isotope 1
6.0 u
7.59%
Isotope 2
7.0 u
92.41%

Accepted Answer

A)  6.0 u 
B)  6.1 u 
C)  7.0 u 
D)  6.9 u 
A)  6.0 u 
B)  6.1 u 
C)  7.0 u 
D)  6.9 u

Question 9

Which element is NOT a metal?

Accepted Answer

A)  Li 
B)  N 
C)  Sn 
D)  Co 
A)  Li 
B)  N 
C)  Sn 
D)  Co

Question 10

Which symbol represents an atom with 9 protons and 10 electrons?

Accepted Answer

A)  Ne- 
B)  Na+ 
C)  Ne+ 
D)  F- 
A)  Ne- 
B)  Na+ 
C)  Ne+ 
D)  F-

Question 11

The symbol for iron,as shown on the periodic table,is given here.What is the atomic number of iron?

Accepted Answer

A)  Fe 
B)  26 
C)  55.845 
D)  19.9845 
A)  Fe 
B)  26 
C)  55.845 
D)  19.9845

Question 12

Which scientist developed the periodic table?

Accepted Answer

A)  Democritus 
B)  Dalton 
C)  Thomson 
D)  Mendeleev 
A)  Democritus 
B)  Dalton 
C)  Thomson 
D)  Mendeleev

Question 13

Rutherford's gold foil experiment showed that:

Accepted Answer

A)  atoms are neither created nor destroyed. 
B)  atoms are mostly empty space with a very dense nucleus. 
C)  atoms contain electrons. 
D)  atoms can combine to form compounds. 
A)  atoms are neither created nor destroyed. 
B)  atoms are mostly empty space with a very dense nucleus. 
C)  atoms contain electrons. 
D)  atoms can combine to form compounds.

Question 14

Which element is NOT a metal?

Accepted Answer

A)  Mg 
B)  S 
C)  Sn 
D)  Ti 
A)  Mg 
B)  S 
C)  Sn 
D)  Ti

Question 15

Which scientist proposed that electrons orbit the nucleus like planets orbit the Sun?

Accepted Answer

A)  Dalton 
B)  Rutherford 
C)  Bohr 
D)  Thomson 
A)  Dalton 
B)  Rutherford 
C)  Bohr 
D)  Thomson

Question 16

An atom that gains an electron is:

Accepted Answer

A)  known as a cation. 
B)  known as an anion. 
C)  still called an atom. 
D)  known as an isotope. 
A)  known as a cation. 
B)  known as an anion. 
C)  still called an atom. 
D)  known as an isotope.

Question 17

Which symbol BEST represents a lithium cation?

Accepted Answer

A)  Li(cat) 
B)  Li+ 
C)  Li- 
D)  Li 
A)  Li(cat) 
B)  Li+ 
C)  Li- 
D)  Li

Question 18

Rust has the formula Fe2O3,and it's made from iron metal reacting with oxygen over time.Assume that you had a 2.0-g block of pure iron metal that fully oxidized to rust and the mass of that product was 6.5 g.What must have been the mass of oxygen that initially reacted with pure iron?

Accepted Answer

A)  2.0 g 
B)  6.5 g 
C)  4.5 g 
D)  4.0 g 
A)  2.0 g 
B)  6.5 g 
C)  4.5 g 
D)  4.0 g

Question 19

Which symbol represents an atom with 8 protons and 10 electrons?

Accepted Answer

A)  Ne- 
B)  O2- 
C)  Na+ 
D)  Na- 
A)  Ne- 
B)  O2- 
C)  Na+ 
D)  Na-

Question 20

Which pair of atoms has similar chemical properties?

Accepted Answer

A)  Li and Be 
B)  Li and Na 
C)  O and F 
D)  F and He 
A)  Li and Be 
B)  Li and Na 
C)  O and F 
D)  F and He

Which subatomic particle will be attracted to a negatively charged metal plate?

_____ allows scientists to construct images showing how atoms combine to form molecules.

What two particles reside in the nucleus?

The law of conservation of _____ tells us that matter is not created or destroyed in a chemical reaction.

An atom that loses an electron is:

The atomic number tells us:

Which subatomic particle will be attracted to a positively charged metal plate?

A certain element is composed of two isotopes,having the mass and abundance shown in the table.What is the average atomic mass for this element? Mass Abundance Isotope 1 6.0 u 7.59% Isotope 2 7.0 u 92.41%

Which element is NOT a metal?

Which symbol represents an atom with 9 protons and 10 electrons?

The symbol for iron,as shown on the periodic table,is given here.What is the atomic number of iron?

Which scientist developed the periodic table?

Rutherford's gold foil experiment showed that:

Which element is NOT a metal?

Which scientist proposed that electrons orbit the nucleus like planets orbit the Sun?

An atom that gains an electron is:

Which symbol BEST represents a lithium cation?

Rust has the formula Fe₂O₃,and it's made from iron metal reacting with oxygen over time.Assume that you had a 2.0-g block of pure iron metal that fully oxidized to rust and the mass of that product was 6.5 g.What must have been the mass of oxygen that initially reacted with pure iron?

Which symbol represents an atom with 8 protons and 10 electrons?

Which pair of atoms has similar chemical properties?

Foundations

Measurement

Light and Electronic Structure

Chemical Bonds Compounds

Chemical Reactions

Mass Stoichiometry

Energy

Covalent Bonding and Molecules

Solids, Liquids, and Gases

Solutions

Acids Bases

Reaction Rates Equilibrium

Oxidation-Reduction Reactions

Organic Chemistry and Biomolecules

Nuclear Chemistry

Filters

Exam 3: Atoms

Which subatomic particle will be attracted to a negatively charged metal plate?

_____ allows scientists to construct images showing how atoms combine to form molecules.

What two particles reside in the nucleus?

The law of conservation of _____ tells us that matter is not created or destroyed in a chemical reaction.

An atom that loses an electron is:

The atomic number tells us:

Which subatomic particle will be attracted to a positively charged metal plate?

A certain element is composed of two isotopes,having the mass and abundance shown in the table.What is the average atomic mass for this element? Mass Abundance Isotope 1 6.0 u 7.59% Isotope 2 7.0 u 92.41%

Which element is NOT a metal?

Which symbol represents an atom with 9 protons and 10 electrons?

The symbol for iron,as shown on the periodic table,is given here.What is the atomic number of iron?

Which scientist developed the periodic table?

Rutherford's gold foil experiment showed that:

Which element is NOT a metal?

Which scientist proposed that electrons orbit the nucleus like planets orbit the Sun?

An atom that gains an electron is:

Which symbol BEST represents a lithium cation?

Rust has the formula Fe2O3,and it's made from iron metal reacting with oxygen over time.Assume that you had a 2.0-g block of pure iron metal that fully oxidized to rust and the mass of that product was 6.5 g.What must have been the mass of oxygen that initially reacted with pure iron?

Which symbol represents an atom with 8 protons and 10 electrons?

Which pair of atoms has similar chemical properties?

Foundations

Measurement

Light and Electronic Structure

Chemical Bonds Compounds

Chemical Reactions

Mass Stoichiometry

Energy

Covalent Bonding and Molecules

Solids, Liquids, and Gases

Solutions

Acids Bases

Reaction Rates Equilibrium

Oxidation-Reduction Reactions

Organic Chemistry and Biomolecules

Nuclear Chemistry

Filters

Rust has the formula Fe₂O₃,and it's made from iron metal reacting with oxygen over time.Assume that you had a 2.0-g block of pure iron metal that fully oxidized to rust and the mass of that product was 6.5 g.What must have been the mass of oxygen that initially reacted with pure iron?