Question 1

Chemistry that is essential to the understanding of plastics and steel is found within the field of:

Accepted Answer

A)  physics. 
B)  biology/medicine. 
C)  materials. 
D)  geology. 
A)  physics. 
B)  biology/medicine. 
C)  materials. 
D)  geology.

Question 2

Which mixture is heterogeneous?

Accepted Answer

A)  water from a creek or small river 
B)  purified water 
C)  fresh milk recently purchased from the grocery store 
D)  a cup of black coffee 
A)  water from a creek or small river 
B)  purified water 
C)  fresh milk recently purchased from the grocery store 
D)  a cup of black coffee

Question 3

Which phase of matter has a definite volume but no definite shape?

Accepted Answer

A)  plasma 
B)  solid 
C)  liquid 
D)  gas 
A)  plasma 
B)  solid 
C)  liquid 
D)  gas

Question 4

Which process is endothermic?

Accepted Answer

A)  burning wood in a fireplace 
B)  heating water to convert it to steam 
C)  burning gasoline in a combustion engine 
D)  digesting food 
A)  burning wood in a fireplace 
B)  heating water to convert it to steam 
C)  burning gasoline in a combustion engine 
D)  digesting food

Question 5

_____ is often referred to as the "central science" because it connects with every other field of science.

Accepted Answer

A)  Chemistry 
B)  Biology/medicine 
C)  Physics 
D)  Geology 
A)  Chemistry 
B)  Biology/medicine 
C)  Physics 
D)  Geology

Question 6

Mineral deposits (known as soap scum)can be removed from your bathtub by reacting with vinegar.This changes the soap scum to a new compound that more easily washes away.This process does not change the soap scum's state of matter.The removal of soap scum by the addition of vinegar:

Accepted Answer

A)  involves both chemical and physical changes. 
B)  involves only chemical changes or processes. 
C)  involves only physical changes or processes. 
D)  cannot be done with the materials listed. 
A)  involves both chemical and physical changes. 
B)  involves only chemical changes or processes. 
C)  involves only physical changes or processes. 
D)  cannot be done with the materials listed.

Question 7

Which statement is NOT accurate?

Accepted Answer

A)  Scientific laws describe observations that are true in widely varying circumstances. 
B)  Theories describe how or why something happens. 
C)  Theories one day become scientific laws. 
D)  Theories are supported by scientific evidence. 
A)  Scientific laws describe observations that are true in widely varying circumstances. 
B)  Theories describe how or why something happens. 
C)  Theories one day become scientific laws. 
D)  Theories are supported by scientific evidence.

Question 8

By definition,which substance can be broken down into simpler substances?

Accepted Answer

A)  gas 
B)  element 
C)  compound 
D)  liquid 
A)  gas 
B)  element 
C)  compound 
D)  liquid

Question 9

A mixture of iron,salt,and sand can be separated using a magnet,water,a filter,and a hot plate.This separation:

Accepted Answer

A)  involves both chemical and physical changes. 
B)  involves only chemical changes or processes. 
C)  involves only physical changes or processes. 
D)  cannot be done with the materials listed. 
A)  involves both chemical and physical changes. 
B)  involves only chemical changes or processes. 
C)  involves only physical changes or processes. 
D)  cannot be done with the materials listed.

Question 10

After testing and refining ideas,scientists often develop a model that explains why things behave as they do and predicts what will happen in the future.This type of model is BEST referred to as a:

Accepted Answer

A)  theory. 
B)  scientific law. 
C)  hypothesis. 
D)  postulate. 
A)  theory. 
B)  scientific law. 
C)  hypothesis. 
D)  postulate.

Chemistry that is essential to the understanding of plastics and steel is found within the field of:

Which mixture is heterogeneous?

Which phase of matter has a definite volume but no definite shape?

Which process is endothermic?

_____ is often referred to as the "central science" because it connects with every other field of science.

Mineral deposits (known as soap scum)can be removed from your bathtub by reacting with vinegar.This changes the soap scum to a new compound that more easily washes away.This process does not change the soap scum's state of matter.The removal of soap scum by the addition of vinegar:

Which statement is NOT accurate?

By definition,which substance can be broken down into simpler substances?

A mixture of iron,salt,and sand can be separated using a magnet,water,a filter,and a hot plate.This separation:

After testing and refining ideas,scientists often develop a model that explains why things behave as they do and predicts what will happen in the future.This type of model is BEST referred to as a:

Measurement

Atoms

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 1: Foundations

Chemistry that is essential to the understanding of plastics and steel is found within the field of:

Which mixture is heterogeneous?

Which phase of matter has a definite volume but no definite shape?

Which process is endothermic?

_____ is often referred to as the "central science" because it connects with every other field of science.

Mineral deposits (known as soap scum)can be removed from your bathtub by reacting with vinegar.This changes the soap scum to a new compound that more easily washes away.This process does not change the soap scum's state of matter.The removal of soap scum by the addition of vinegar:

Which statement is NOT accurate?

By definition,which substance can be broken down into simpler substances?

A mixture of iron,salt,and sand can be separated using a magnet,water,a filter,and a hot plate.This separation:

After testing and refining ideas,scientists often develop a model that explains why things behave as they do and predicts what will happen in the future.This type of model is BEST referred to as a:

Measurement

Atoms

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