Chem 101 Midterm Ivy Tech Questions With Complete
Solutions 2024
Which of the following is considered a hypothesis (as opposed to an observation)? - -
Birds can fly because they have hollow bones
Which of the following would be considered a theory? - - Helium balloons float
because helium is less dense than air.
Which of the statements below is NOT part of the scientific method? - - All of the
above steps are part of the scientific method.
Which statement about a hypothesis is TRUE? - - All of the above statements are
true.
Who discovered the law of conservation of mass? - - Antoine Lavoisier
The distance between two hydrogen atoms in a molecule of water 0.0000000000172 m.
Express this distance in scientific notation. - - 1.72 x 10^-10 m
Which of the following would NOT be considered a correct conversion factor? - -1
pair of shoes = 1 shoe
In the number 48.93, which digit is estimated? - -3
In order, what is the freezing point, room temperature and boiling point of water according
to the Celsius scale? - - 32-75-212
, Which state of matter has indefinite shape and is compressible? - - Gas
How would you classify raisin bran? - - mixture- heterogeneous
Which type of energy is associated with the burning of gasoline? - - Chemical
Which of the following is a heterogeneous mixture? - - Raisin bran
Which of the following statements about compounds is TRUE? - - A substance
composed of two or more elements is fixed, definite proportions.
What is the correct formula for a potassium ion with 18 electrons? - - K+
Which of the following is NOT part of Dalton's Atomic Theory? - - All of the above
Group 8A elements are called? - - Noble gases
How many carbon atoms are in the formula Al2(CO3)3? - -3
What is the name for Hl(aq)? - - Hydroiodic acid
Which among the following statements is FALSE? - - None of the above
Cr is a member of which family? - - none of the above
How many neutrons are present in C-14? - -8
An atom containing 7 protons, 8 neutrons, and 7 electrons - - Is charge-neutral
If an isotope of an element has 27 neutrons and a mass number of 52, how many electrons
must it have? - - 25
Solutions 2024
Which of the following is considered a hypothesis (as opposed to an observation)? - -
Birds can fly because they have hollow bones
Which of the following would be considered a theory? - - Helium balloons float
because helium is less dense than air.
Which of the statements below is NOT part of the scientific method? - - All of the
above steps are part of the scientific method.
Which statement about a hypothesis is TRUE? - - All of the above statements are
true.
Who discovered the law of conservation of mass? - - Antoine Lavoisier
The distance between two hydrogen atoms in a molecule of water 0.0000000000172 m.
Express this distance in scientific notation. - - 1.72 x 10^-10 m
Which of the following would NOT be considered a correct conversion factor? - -1
pair of shoes = 1 shoe
In the number 48.93, which digit is estimated? - -3
In order, what is the freezing point, room temperature and boiling point of water according
to the Celsius scale? - - 32-75-212
, Which state of matter has indefinite shape and is compressible? - - Gas
How would you classify raisin bran? - - mixture- heterogeneous
Which type of energy is associated with the burning of gasoline? - - Chemical
Which of the following is a heterogeneous mixture? - - Raisin bran
Which of the following statements about compounds is TRUE? - - A substance
composed of two or more elements is fixed, definite proportions.
What is the correct formula for a potassium ion with 18 electrons? - - K+
Which of the following is NOT part of Dalton's Atomic Theory? - - All of the above
Group 8A elements are called? - - Noble gases
How many carbon atoms are in the formula Al2(CO3)3? - -3
What is the name for Hl(aq)? - - Hydroiodic acid
Which among the following statements is FALSE? - - None of the above
Cr is a member of which family? - - none of the above
How many neutrons are present in C-14? - -8
An atom containing 7 protons, 8 neutrons, and 7 electrons - - Is charge-neutral
If an isotope of an element has 27 neutrons and a mass number of 52, how many electrons
must it have? - - 25
