IPAC: MIDTERM EXAM (LATEST) 2024
QUESTIONS WITH ANSWERS SCORED A+
An experiment is designed to determine if the amount of sugar in a drink
affects the likelihood that bees will be attracted to it. Sample A is 100 mL of
pure water. Sample B is 100 mL of water with 1 gram of sugar dissolved in it.
Sample C is 100 mL of water with 2 grams of sugar dissolved in it.
All samples are placed on a picnic table. One observer is assigned to each drink.
The observers count the number of bees that visit the drink during a 15-minute
interval.
Which of the following is the best hypothesis for this experiment? Answer - If
the amount of sugar in a drink increases, then the number of bees it attracts
will increase.
In the above experiment, which factor is the independent variable? Answer -
the amount of sugar in the sample
Make the following conversion.
0.080 mL = _____ L Answer - 0.000080 L
Use the ruler to determine the length of the line measured to the correct
degree of precision. Answer - 13.25 cm
What is the volume of the fluid in this graduated cylinder measured to the
correct degree of precision? Answer - 41.5 mL
, Determine the mass of the object below to the correct degree of precision.
Answer - 105.65 g
Which of the following scientists used atomic spectra to develop a model of the
atom? Answer - Niels Bohr
Find similar atoms via a periodic table of elements Answer - Oxygen (8),
selenium(34), tellurium(52)
Know atomic weight from an elemental square Answer - 39.0983
Know atomic number from an elemental square Answer - 19
Find the number of neutrons from an elemental square Answer - 20
How many atoms? CaBr(2) Answer - 3
What is the best name for CaBr(2)? Answer - Calcium Bromide
You are presented with a mixture of iron beads and iron filings. How can you
separate them? Answer - use a screen
The specific heat of silver is 0.06 cal/g(c). Fifty grams of silver will require
________ calories to raise the temperature 1(c). Answer - 3
An acid solution contains more _______ ions than _______ ions. Answer -
hydronium, hydroxide.
QUESTIONS WITH ANSWERS SCORED A+
An experiment is designed to determine if the amount of sugar in a drink
affects the likelihood that bees will be attracted to it. Sample A is 100 mL of
pure water. Sample B is 100 mL of water with 1 gram of sugar dissolved in it.
Sample C is 100 mL of water with 2 grams of sugar dissolved in it.
All samples are placed on a picnic table. One observer is assigned to each drink.
The observers count the number of bees that visit the drink during a 15-minute
interval.
Which of the following is the best hypothesis for this experiment? Answer - If
the amount of sugar in a drink increases, then the number of bees it attracts
will increase.
In the above experiment, which factor is the independent variable? Answer -
the amount of sugar in the sample
Make the following conversion.
0.080 mL = _____ L Answer - 0.000080 L
Use the ruler to determine the length of the line measured to the correct
degree of precision. Answer - 13.25 cm
What is the volume of the fluid in this graduated cylinder measured to the
correct degree of precision? Answer - 41.5 mL
, Determine the mass of the object below to the correct degree of precision.
Answer - 105.65 g
Which of the following scientists used atomic spectra to develop a model of the
atom? Answer - Niels Bohr
Find similar atoms via a periodic table of elements Answer - Oxygen (8),
selenium(34), tellurium(52)
Know atomic weight from an elemental square Answer - 39.0983
Know atomic number from an elemental square Answer - 19
Find the number of neutrons from an elemental square Answer - 20
How many atoms? CaBr(2) Answer - 3
What is the best name for CaBr(2)? Answer - Calcium Bromide
You are presented with a mixture of iron beads and iron filings. How can you
separate them? Answer - use a screen
The specific heat of silver is 0.06 cal/g(c). Fifty grams of silver will require
________ calories to raise the temperature 1(c). Answer - 3
An acid solution contains more _______ ions than _______ ions. Answer -
hydronium, hydroxide.
