AnswersChemistry 1A - Mr. KaanWriting and Balancing Chemical Equations

Writing and Balancing Chemical Equations — Cumulative exam Answers

50 verified answers6 views
61
Free Preview

What name should be used for the ionic compound Cu(NO)?

Question illustration
A
copper nitrate
B
copper(I) nitrate
C
copper(II) nitrate
D
copper(III) nitrate
62
Free Preview

What is the primary difference between a hypothesis and a theory?

A
A theory is supported by more data and observations than a hypothesis is.
B
A hypothesis is falsifiable, but a theory has been proven to be correct.
C
A theory is a prediction, but a hypothesis is an explanation.
D
A hypothesis is more reliable than a theory.
63

Which compound does H2SO4 represent when in an aqueous solution?

A
sulfur oxide
B
sulfuric acid
C
hydrogen sulfide
D
hydrogen disulfate
64

Which property would cesium most likely have?

A
It is hard.
B
It is ductile.
C
It is a gas.
D
It has low reactivity.
65

Which statement describes how the binary ionic compound CaCl2 is named?

A
The nonmetal is named first, and the ending is replaced with -ide.
B
The metal is named first, and the ending is replaced with -ide.
C
The nonmetal is named second, and the ending is replaced with -ide.
D
The metal is named second, and the ending is replaced with -ide.
66

The table below gives the numbers of protons, electrons, and neutrons in four atoms.AtomNumber of protonsNumber of neutronsNumber of electrons198929983991049109Based on the table, which atom has a charge of –1?

A
1
B
2
C
3
D
4
67

What is the molar mass of Al2(SO4)3?

A
150.03 g/mol
B
278.03 g/mol
C
342.17 g/mol
D
450.09 g/mol
68

Consider the model of the nitrogen atom.Which electron configuration matches this model?

Question illustration
A
1s22s22p2
B
1s22s22p3
C
1s22s22p4
D
1s22s22p5
69

How did Moseley establish a more accurate periodic table?

A
by arranging the elements according to atomic mass instead of atomic number
B
by arranging the elements according to atomic number instead of atomic mass
C
by arranging the elements into horizontal periods
D
by arranging the elements into vertical groups
70

Which statement correctly compares a law and a theory?

A
A law provides an explanation, while a theory simply describes observations.
B
A law is supported by data, while a theory is merely a guess.
C
Neither a law nor a theory can be proved false.
D
Both a law and a theory can be tested.
71

What is Avogadro’s number?

A
the number of atoms in exactly 14.00 g of carbon-12
B
the number of atoms in a kilogram of any substance
C
the number of atoms, molecules, ions, formula units, or other particles in a mole of a substance
D
the number of atoms, molecules, ions, formula units, or other particles in a gram of a substance
72

What is the chemical formula for ammonium sulfate?

A
NH(SO)
Option A
B
NH(SO4)
Option B
C
(NH)SO
Option C
D
(NH)SO4
Option D
73

Which element has the greatest average atomic mass?

A
iodine
B
bromine
C
tellurium
D
krypton

Did you find these answers helpful?

More from this Course

Assignment
20 verified answers

Assignment

Assignment
21 verified answers

Types of Reactions

Assignment
20 verified answers

Writing and Balancing Chemical Equations