ATI Teas Test: Science Section
+ 3H2 --> 2NH3
Which of the subsequent will growth the fee of the exothermic reaction shown above?
A.) Decreasing the stress
b.) Increasing the temperature
c.) Adding a catalyst
d.) Adding ammonia (NH3) - ANS-Adding a catalyst
3CaCl2 + 2Na3PO4 --> Ca3 (PO4)2 + 6NaCl
The coefficients inside the chemical rection equation above show the portions of the
substances inside the response. Which of the following gadgets are assumed to represent
the quantities?
A.) Moles
b.) Grams
c.) Atoms
d.) Molecules - ANS-Moles
A cup of tea with a extent of 2 hundred mL carries 0.02 mol sucrose. What is the molar
attention of sucrose? (Round the answer to the closest 10th. Use a main 0 if it applies. Do
not use a trailing zero.) - ANS-zero.01
Molarity is calculated by way of dividing the moles of solute by the total liters of solution.
Molarity (M) = moles of solute/ liters of solution
M= zero.02 mol / (two hundred mL / 1000)
A pink-flowered pea plant and a white-flowered pea plant were crossed. The allele for red
flora is dominant, and the allele for white flowers is recessive. Of 1,000 offspring, 498 have
been pink-flowered pea flora, and 502 had been white-flowered peas flowers. Based on
these effects, which of the subsequent may be concluded about the parent plant life?
A.) The white-flowered pea plant is homozygous dominant.
B.) The white-flowered pea plant is heterozygous
c.) The red-flowered pea plant is heterozygous
d.) The red-flowered pea plant is homozygous dominant - ANS-The pink-flowered pea plant
is heterozygous
A substance in a solid nation is placed on a hot plate with a thermometer. Every minute, the
temperature of the substance is recorded. According the graph, what's happening to the
substance?
, A.) As warmth is added, the substance is turning into an increasing number of dense
b.) As warmness is brought, the particles maintaining the substance together are becoming
stronger
c.) As warmness is delivered, the forces holding the debris together are breaking, converting
the country
d.) As warmness is brought, the substance is maintaining room temperature with the aid of
soaking up the energy. - ANS-As heat is brought, the forces preserving the particles
collectively are breaking, changing the state
According to the graph, which of the subsequent identifies whilst fertilization is most in all
likelihood?
A.) among day zero and seven
b.) After luteinizing hormone (LH) ranges top and begin to say no
c.) Before ovulation
d.) When estrogen tiers are maximum - ANS-After luteinizing hormone (LH) levels peak and
start to say no
An test is conducted to test the outcomes of caffeine on coronary heart rate. Four trials are
installation. In every trail, a daphnia, a small water organism, is given specific quantities of
caffeine. After five mins, the range of coronary heart beats are counted for 1 minute. The
consequences are shown inside the table.
Which of the subsequent motives states a logical reason and impact of caffeine on the
coronary heart beats of daphnia?
A.) Daphnia need caffeine to pump blood all through their body
b.) Caffeine reasons daphnia to lower their heart costs over time
c.) Caffeine does no longer affect daphnia's heart fee
d.) Daphnia given an excessive amount of caffeine may additionally die - ANS-Daphnia
given too much caffeine may also die
Based at the information, daphnia which might be given too much caffeine may additionally
die. Which of the following experimental practices would toughen the belief made
approximately daphnia and caffeine?
A.) The experimenter ought to take a look at the experiment with different materials besides
caffeine
b.) The experimenter need to take a look at the experiment using exclusive organisms
c.) The experimenter must check each circumstance extra than as soon as
d.) The experimenter must accumulate information after 10 minutes in preference to five
minutes - ANS-The experimenter ought to take a look at each circumstance more than once
CH3COOH + H2O <--> CH3COO- + H3O+
+ 3H2 --> 2NH3
Which of the subsequent will growth the fee of the exothermic reaction shown above?
A.) Decreasing the stress
b.) Increasing the temperature
c.) Adding a catalyst
d.) Adding ammonia (NH3) - ANS-Adding a catalyst
3CaCl2 + 2Na3PO4 --> Ca3 (PO4)2 + 6NaCl
The coefficients inside the chemical rection equation above show the portions of the
substances inside the response. Which of the following gadgets are assumed to represent
the quantities?
A.) Moles
b.) Grams
c.) Atoms
d.) Molecules - ANS-Moles
A cup of tea with a extent of 2 hundred mL carries 0.02 mol sucrose. What is the molar
attention of sucrose? (Round the answer to the closest 10th. Use a main 0 if it applies. Do
not use a trailing zero.) - ANS-zero.01
Molarity is calculated by way of dividing the moles of solute by the total liters of solution.
Molarity (M) = moles of solute/ liters of solution
M= zero.02 mol / (two hundred mL / 1000)
A pink-flowered pea plant and a white-flowered pea plant were crossed. The allele for red
flora is dominant, and the allele for white flowers is recessive. Of 1,000 offspring, 498 have
been pink-flowered pea flora, and 502 had been white-flowered peas flowers. Based on
these effects, which of the subsequent may be concluded about the parent plant life?
A.) The white-flowered pea plant is homozygous dominant.
B.) The white-flowered pea plant is heterozygous
c.) The red-flowered pea plant is heterozygous
d.) The red-flowered pea plant is homozygous dominant - ANS-The pink-flowered pea plant
is heterozygous
A substance in a solid nation is placed on a hot plate with a thermometer. Every minute, the
temperature of the substance is recorded. According the graph, what's happening to the
substance?
, A.) As warmth is added, the substance is turning into an increasing number of dense
b.) As warmness is brought, the particles maintaining the substance together are becoming
stronger
c.) As warmness is delivered, the forces holding the debris together are breaking, converting
the country
d.) As warmness is brought, the substance is maintaining room temperature with the aid of
soaking up the energy. - ANS-As heat is brought, the forces preserving the particles
collectively are breaking, changing the state
According to the graph, which of the subsequent identifies whilst fertilization is most in all
likelihood?
A.) among day zero and seven
b.) After luteinizing hormone (LH) ranges top and begin to say no
c.) Before ovulation
d.) When estrogen tiers are maximum - ANS-After luteinizing hormone (LH) levels peak and
start to say no
An test is conducted to test the outcomes of caffeine on coronary heart rate. Four trials are
installation. In every trail, a daphnia, a small water organism, is given specific quantities of
caffeine. After five mins, the range of coronary heart beats are counted for 1 minute. The
consequences are shown inside the table.
Which of the subsequent motives states a logical reason and impact of caffeine on the
coronary heart beats of daphnia?
A.) Daphnia need caffeine to pump blood all through their body
b.) Caffeine reasons daphnia to lower their heart costs over time
c.) Caffeine does no longer affect daphnia's heart fee
d.) Daphnia given an excessive amount of caffeine may additionally die - ANS-Daphnia
given too much caffeine may also die
Based at the information, daphnia which might be given too much caffeine may additionally
die. Which of the following experimental practices would toughen the belief made
approximately daphnia and caffeine?
A.) The experimenter ought to take a look at the experiment with different materials besides
caffeine
b.) The experimenter need to take a look at the experiment using exclusive organisms
c.) The experimenter must check each circumstance extra than as soon as
d.) The experimenter must accumulate information after 10 minutes in preference to five
minutes - ANS-The experimenter ought to take a look at each circumstance more than once
CH3COOH + H2O <--> CH3COO- + H3O+
