Question 1

Locard's principle states that

Accepted Answer

A) when two things come into contact there is always a transfer of material from one object to another. 
B) when an atom is energized it always emits light. 
C) dog hair always sticks to corduroy pants. 
D) a chemical reaction emits less energy than a nuclear reaction. 
E) none of the above. 
A) when two things come into contact there is always a transfer of material from one object to another. 
B) when an atom is energized it always emits light. 
C) dog hair always sticks to corduroy pants. 
D) a chemical reaction emits less energy than a nuclear reaction. 
E) none of the above.

Question 2

On the periodic table, vertical columns are called

Accepted Answer

A) periods. 
B) groups or families. 
C) sets. 
D) metals. 
A) periods. 
B) groups or families. 
C) sets. 
D) metals.

Question 3

On the periodic table, horizontal rows are called

Accepted Answer

A) families. 
B) groups. 
C) periods. 
D) cousins. 
A) families. 
B) groups. 
C) periods. 
D) cousins.

Question 4

When a substance in the solid phase jumps directly to the gas phase, the process is known as

Accepted Answer

A) sublimation. 
B) vaporization. 
C) condensation. 
D) melting. 
A) sublimation. 
B) vaporization. 
C) condensation. 
D) melting.

Question 5

According to the following chemical formula, how many atoms of hydrogen does glucose, C6H12O6, contain?

Accepted Answer

A) 12 
B) 6.02 × 1023 × 12 
C) 6.02 × 1023  
D) 24 
A) 12 
B) 6.02 × 1023 × 12 
C) 6.02 × 1023  
D) 24

Question 6

Cl can be classified as a

Accepted Answer

A) metal. 
B) metalloid. 
C) nonmetal. 
D) gas. 
A) metal. 
B) metalloid. 
C) nonmetal. 
D) gas.

Question 7

Write the formula for a compound that contains four hydrogen atoms, two oxygen atoms, and two carbon atoms.

Accepted Answer

A) 4H2O2C 
B) C2H4O2 
C) C2O2H4 
D) CHHHCOOH 
A) 4H2O2C 
B) C2H4O2 
C) C2O2H4 
D) CHHHCOOH

Question 8

How does gold mining pollute local waterways?

Accepted Answer

A) The large volume of dirt that is left behind clogs nearby waterways. 
B) Mining runoff contains toxic chemicals such as arsenic, which can contaminate nearby lakes and rivers. 
C) Heavy metals from the mining process sink to the bottom of streams and rivers, killing off wildlife. 
D) Local rivers are dammed to provide water for the mining process.This upsets the local plant and animal life. 
A) The large volume of dirt that is left behind clogs nearby waterways. 
B) Mining runoff contains toxic chemicals such as arsenic, which can contaminate nearby lakes and rivers. 
C) Heavy metals from the mining process sink to the bottom of streams and rivers, killing off wildlife. 
D) Local rivers are dammed to provide water for the mining process.This upsets the local plant and animal life.

Question 9

Identify the halogen.

Accepted Answer

A) K 
B) Ni 
C) Pb 
D) I 
E) Ne 
A) K 
B) Ni 
C) Pb 
D) I 
E) Ne

Question 10

Which one of the following pairs of elements would be most likely to share similar properties?

Accepted Answer

A) N and F 
B) B and Si 
C) Cl and Br 
D) Br and Kr 
E) Li and Be 
A) N and F 
B) B and Si 
C) Cl and Br 
D) Br and Kr 
E) Li and Be

Question 11

Which element is present in the greatest quantity in soil?

Accepted Answer

A) carbon 
B) iron 
C) calcium 
D) oxygen 
E) bromine 
A) carbon 
B) iron 
C) calcium 
D) oxygen 
E) bromine

Question 12

What is the best way to reduce the environmental impact of gold mining?

Accepted Answer

A) Use fewer heavy metals for its extraction. 
B) Isolate the mines from fragile ecosystems. 
C) Buy and use recycled gold. 
D) Raise the price of gold. 
A) Use fewer heavy metals for its extraction. 
B) Isolate the mines from fragile ecosystems. 
C) Buy and use recycled gold. 
D) Raise the price of gold.

Question 13

Which three toxic elements are part of e-waste?

Accepted Answer

A) Na, V, Ti 
B) Pb, Ag, Au 
C) U, Th, Tc 
D) Pb, Hg, Cd 
A) Na, V, Ti 
B) Pb, Ag, Au 
C) U, Th, Tc 
D) Pb, Hg, Cd

Question 14

Organic substances will always contain what element?

Accepted Answer

A) iron 
B) carbon 
C) tin 
D) chlorine 
E) lead 
A) iron 
B) carbon 
C) tin 
D) chlorine 
E) lead

Question 15

Mixtures can often be separated into pure substances by taking advantage of differences in the physical properties of the pure substances contained in the mixture.Which one is not a physical property?

Accepted Answer

A) color 
B) boiling point 
C) melting point 
D) flammability 
A) color 
B) boiling point 
C) melting point 
D) flammability

Question 16

Which one of the following is not a characteristic of metals?

Accepted Answer

A) malleable 
B) brittle 
C) ductile 
D) good electrical conductors 
A) malleable 
B) brittle 
C) ductile 
D) good electrical conductors

Question 17

The rainforest in Peru is a hotspot for gold mining.What element is having a large and negative impact on local ecosystems?

Accepted Answer

A) gold 
B) chlorine 
C) manganese 
D) mercury 
A) gold 
B) chlorine 
C) manganese 
D) mercury

Question 18

Sodium belongs to group number _______ on the periodic table.

Accepted Answer

A) 1 
B) 2 
C) 7 
D) 8 
A) 1 
B) 2 
C) 7 
D) 8

Question 19

Identify the transition metal.

Accepted Answer

A) Cs 
B) Fe 
C) As 
D) N 
E) H 
A) Cs 
B) Fe 
C) As 
D) N 
E) H

Question 20

The law of constant composition states that

Accepted Answer

A) the number of atoms in a compound only changes when the compound changes state. 
B) a given compound has a fixed and definite number of atoms of each of its constituent elements. 
C) compounds react with each other in whole unit ratios. 
D) the composition of a compound will be the same before and after a reaction. 
A) the number of atoms in a compound only changes when the compound changes state. 
B) a given compound has a fixed and definite number of atoms of each of its constituent elements. 
C) compounds react with each other in whole unit ratios. 
D) the composition of a compound will be the same before and after a reaction.

Locard's principle states that

On the periodic table, vertical columns are called

On the periodic table, horizontal rows are called

When a substance in the solid phase jumps directly to the gas phase, the process is known as

According to the following chemical formula, how many atoms of hydrogen does glucose, C₆H₁₂O₆, contain?

Cl can be classified as a

Write the formula for a compound that contains four hydrogen atoms, two oxygen atoms, and two carbon atoms.

How does gold mining pollute local waterways?

Identify the halogen.

Which one of the following pairs of elements would be most likely to share similar properties?

Which element is present in the greatest quantity in soil?

What is the best way to reduce the environmental impact of gold mining?

Which three toxic elements are part of e-waste?

Organic substances will always contain what element?

Mixtures can often be separated into pure substances by taking advantage of differences in the physical properties of the pure substances contained in the mixture.Which one is not a physical property?

Which one of the following is not a characteristic of metals?

The rainforest in Peru is a hotspot for gold mining.What element is having a large and negative impact on local ecosystems?

Sodium belongs to group number _______ on the periodic table.

Identify the transition metal.

The law of constant composition states that

The Story of Chemistry the Scientific Method Think, Measure, Rethink

Atoms All About Atoms and Whats Inside Them

Bonds an Introduction to the Forces Within Substances

Carbon Elemental Carbon, Organic Molecules, and Carbon Footprints

Air a Study of the Gases in Our Atmosphere

Chemical Reactions How We Keep Track of Chemical Changes

Water Why Water Is Critical for Human Beings and the Planet

Salts and Aqueous Solutions the Nature of Salts and How They Interact With Water

Ph and Acid Rain Acid Rain and Our Environment

Nukes the Fundamentals of Nuclear Chemistry

Energy, Power, and Climate Change the Fundamentals of Nuclear Chemistry

Sustainability and Recycling Finding Better Ways to Use and Reuse Our Resources

Food the Biochemistry of the Foods We Eat

Filters

Exam 3: Everything the Ways We Organize and Classify Matter

Locard's principle states that

On the periodic table, vertical columns are called

On the periodic table, horizontal rows are called

When a substance in the solid phase jumps directly to the gas phase, the process is known as

According to the following chemical formula, how many atoms of hydrogen does glucose, C6H12O6, contain?

Cl can be classified as a

Write the formula for a compound that contains four hydrogen atoms, two oxygen atoms, and two carbon atoms.

How does gold mining pollute local waterways?

Identify the halogen.

Which one of the following pairs of elements would be most likely to share similar properties?

Which element is present in the greatest quantity in soil?

What is the best way to reduce the environmental impact of gold mining?

Which three toxic elements are part of e-waste?

Organic substances will always contain what element?

Mixtures can often be separated into pure substances by taking advantage of differences in the physical properties of the pure substances contained in the mixture.Which one is not a physical property?

Which one of the following is not a characteristic of metals?

The rainforest in Peru is a hotspot for gold mining.What element is having a large and negative impact on local ecosystems?

Sodium belongs to group number _______ on the periodic table.

Identify the transition metal.

The law of constant composition states that

The Story of Chemistry the Scientific Method Think, Measure, Rethink

Atoms All About Atoms and Whats Inside Them

Bonds an Introduction to the Forces Within Substances

Carbon Elemental Carbon, Organic Molecules, and Carbon Footprints

Air a Study of the Gases in Our Atmosphere

Chemical Reactions How We Keep Track of Chemical Changes

Water Why Water Is Critical for Human Beings and the Planet

Salts and Aqueous Solutions the Nature of Salts and How They Interact With Water

Ph and Acid Rain Acid Rain and Our Environment

Nukes the Fundamentals of Nuclear Chemistry

Energy, Power, and Climate Change the Fundamentals of Nuclear Chemistry

Sustainability and Recycling Finding Better Ways to Use and Reuse Our Resources

Food the Biochemistry of the Foods We Eat

Filters

According to the following chemical formula, how many atoms of hydrogen does glucose, C₆H₁₂O₆, contain?