EXAM QUESTIONS AND ANSWERS 100

MTTC Integrated Science Secondary

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025) What are the 5 steps in the Scientific Method? - Correct Answers ✅1.Identify a problem or pose a question based on an observation.

• Formulate a hypotheses.
• Conduct experiments or tests the hypotheses.
• Observe and record the results.
• Draw a conclusion (was the hypothesis correct?).
• peer review is also important.

Metric Unit deca (da): - Correct Answers ✅x 10^1

Metric Unit hecto (h): - Correct Answers ✅x 10^2

Metric Unit kilo (k): - Correct Answers ✅x 10^3

Metric Unit mega (M): - Correct Answers ✅x 10^6

Metric Unit giga (G): - Correct Answers ✅x 10^9

Metric Unit deci (d): - Correct Answers ✅x 10^-1

Metric Unit centi (c): - Correct Answers ✅x 10^-2

Metric Unit milli (m): - Correct Answers ✅x 10^-3

Metric Unit micro (µ): - Correct Answers ✅x 10^-6 1 / 4

MTTC Integrated Science Secondary

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025)

Metric Unit nano (n): - Correct Answers ✅x 10^-9

Metric Unit pico (p) - Correct Answers ✅x 10^-12 What is an Independent Variable and what axis is it plotted on in a graph? - Correct Answers ✅*The variable that acts as a control or does not change during an experiment.*x axis What is an Dependent Variable and what axis is it plotted on in a graph? - Correct Answers ✅*The variable that changes in response to the independent variable. This change is measured to determine the effect of the independent variable on the dependent variable.*y axis What are random experimental errors? - Correct Answers ✅Errors that are not consistent across the data set.

• can result in collected data that does not seem to fit and may be wildly

different from the rest of the data, or they may result in data that is indistinguishable from the rest.

• may be the result of outside factors that are not considered variables

*referred to as noise What are systematic experimental errors? - Correct Answers ✅An error that will show up consistently across a sample or data set.*may be the result of a flaw in the experiment design or instrumentation *affects the average 2 / 4

MTTC Integrated Science Secondary

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025) *known as a bias

Chemistry lab fire hazards - Correct Answers ✅Volatile solvents:

ether, acetone, benzene *store in open beaker or Erlenmeyer flask *use extreme caution around sparks

• heat in fume hood with a steam bath (not on a hot plate)

Chemistry lab chemical burns - Correct Answers ✅Mineral acids and alkalis are corrosive to the skin and eyes *acid halides and phenols are corrosive and often toxic Chemistry lab toxic chemicals that can be absorbed through the skin - Correct Answers ✅dimethyl sulfoxide (DMSO) nitrobenzene Chemistry lab toxic fume inhalation - Correct Answers ✅acetyl chloride- severely irritate membranes in the eyes, nose, throat, and lungs benzyl chloride- eye irritation and tears Simple microscope - Correct Answers ✅a microscope that contains only one lens Compound microscope - Correct Answers ✅Microscope that contains two or more lenses to increase total magnification (usually 3 lenses) *multiply each magnification to obtain total magnification 3 / 4

MTTC Integrated Science Secondary

EXAM QUESTIONS AND ANSWERS 100%

SOLVED (Newest 2025) Accuracy of balances - Correct Answers ✅Most accurate- Electronic triple- beam Least- Spring balance Chromotography - Correct Answers ✅Is the separation of a mobile phase carrying a mixture that moves in contact with a selectively absorbent stationary phase.Analyte - Correct Answers ✅The substance or chemical being analyzed or detected in a specimen reagent - Correct Answers ✅a chemical agent for use in chemical reactions centrifuge - Correct Answers ✅an apparatus that uses centrifugal force to separate particles from a suspension Heterogeneous mixture - Correct Answers ✅A mixture in which different materials can be distinguished easily precipitate - Correct Answers ✅A solid that forms and settles out of a liquid mixture supernatant - Correct Answers ✅liquid above the precipitate that remains after centrifugation that can be removed from the precipitate with a pipet- also called centrifugate

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