Question 1

Which diagram(s) best represent(s) only individual atoms?

Accepted Answer

A) I only 
B) II only 
C) III only 
D) IV only 
E) II and III only 
A) I only 
B) II only 
C) III only 
D) IV only 
E) II and III only

Question 2

How many protons are in an atom of carbon?

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 12 
A) 2 
B) 4 
C) 6 
D) 12

Question 3

Which one of the following is an example of a homogeneous mixture?

Accepted Answer

A) A chocolate chip cookie 
B) A glass of pulp-free lemonade 
C) A carbonated beverage 
D) A bowl of cereal in milk 
A) A chocolate chip cookie 
B) A glass of pulp-free lemonade 
C) A carbonated beverage 
D) A bowl of cereal in milk

Question 4

What is the density of a block of material that is 12 cm x 6 cm x 2 cm and has a mass of 356 g?

Accepted Answer

A) 1.00 g/cm3 
B) 2.47 g/cm3 
C) 3.56 g/cm3 
D) 4.95 g/cm3 
A) 1.00 g/cm3 
B) 2.47 g/cm3 
C) 3.56 g/cm3 
D) 4.95 g/cm3

Question 5

What are the three pillars of sustainability?

Accepted Answer

A) Reduce,reuse,recycle 
B) Equitability,justice,quality of life 
C) Diversity,efficiency,toxicity 
D) Environmental,social,economic 
A) Reduce,reuse,recycle 
B) Equitability,justice,quality of life 
C) Diversity,efficiency,toxicity 
D) Environmental,social,economic

Question 6

Which one of the following compounds is considered to be an ionic compound?

Accepted Answer

A) NO 
B) CCl4 
C) LiF 
D) PI3 
A) NO 
B) CCl4 
C) LiF 
D) PI3

Question 7

Which corresponds to the composition of the ion typically formed by magnesium?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
A) A 
B) B 
C) C 
D) D

Question 8

One common class of minerals are aluminosilicates,with a general formula of Al2SiO5.What is the atomic percentage composition of aluminum in an aluminosilicate?

Accepted Answer

A) 12.5 percent Al 
B) 25 percent Al 
C) 33.3 percent Al 
D) 62.5 percent Al 
A) 12.5 percent Al 
B) 25 percent Al 
C) 33.3 percent Al 
D) 62.5 percent Al

Question 9

Oxidation and reduction of atoms involves a change in the number of ___________ in the atom.

Accepted Answer

A) electrons 
B) protons 
C) neutrons 
D) nuclei 
A) electrons 
B) protons 
C) neutrons 
D) nuclei

Question 10

What distinguishes the atoms of one element from another?

Accepted Answer

A) The number of neutrons 
B) The number of protons plus neutrons 
C) The number of protons 
D) The number of neutrons plus electrons 
A) The number of neutrons 
B) The number of protons plus neutrons 
C) The number of protons 
D) The number of neutrons plus electrons

Which diagram(s) best represent(s) only individual atoms?

How many protons are in an atom of carbon?

Which one of the following is an example of a homogeneous mixture?

What is the density of a block of material that is 12 cm x 6 cm x 2 cm and has a mass of 356 g?

What are the three pillars of sustainability?

Which one of the following compounds is considered to be an ionic compound?

Which corresponds to the composition of the ion typically formed by magnesium?

One common class of minerals are aluminosilicates,with a general formula of Al₂SiO₅.What is the atomic percentage composition of aluminum in an aluminosilicate?

Oxidation and reduction of atoms involves a change in the number of ___________ in the atom.

What distinguishes the atoms of one element from another?

The Air We Breathe

Radiation From the Sun

Climate Change

Energy From Combustion

Energy From Alternative Sources

Energy Storage

Water Everywhere: A Most Precious Resource

The World of Polymers and Plastics

Brewing and Chewing

Nutrition

Health Medicine

Genes and Life

Who Killed Drthompson a Forensic Mystery

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Exam 1: Portable Electronics: the Periodic Table in the Palm of Your Hand

Which diagram(s) best represent(s) only individual atoms?

How many protons are in an atom of carbon?

Which one of the following is an example of a homogeneous mixture?

What is the density of a block of material that is 12 cm x 6 cm x 2 cm and has a mass of 356 g?

What are the three pillars of sustainability?

Which one of the following compounds is considered to be an ionic compound?

Which corresponds to the composition of the ion typically formed by magnesium?

One common class of minerals are aluminosilicates,with a general formula of Al2SiO5.What is the atomic percentage composition of aluminum in an aluminosilicate?

Oxidation and reduction of atoms involves a change in the number of ___________ in the atom.

What distinguishes the atoms of one element from another?

The Air We Breathe

Radiation From the Sun

Climate Change

Energy From Combustion

Energy From Alternative Sources

Energy Storage

Water Everywhere: A Most Precious Resource

The World of Polymers and Plastics

Brewing and Chewing

Nutrition

Health Medicine

Genes and Life

Who Killed Drthompson a Forensic Mystery

Filters

One common class of minerals are aluminosilicates,with a general formula of Al₂SiO₅.What is the atomic percentage composition of aluminum in an aluminosilicate?