MTTC Integrated Science Questions And
Answers
Volumetric flask - used to accurately prepare a specific volume and concentration of
solution
Erlenmeyer flasks used for mixing, transporting, and reacting
NOT appropriate for measuring
Meniscus where the liquid measurement is read
Graduated c...
Chromatography set of laboratory techniques used to separate or analyze mixtures
Diluting Acids - always add the concentrated acid solution to water
Centrifuge - used to separate the components of a heterogeneous mixture by spinning it
ex. separate blood cells and plasma
- the heavier cells settle on the bottom of the test tube and the lighter plasma stays on top
ex. salad spinner to dry lettuce
Calorimetry used to determine the heat released or absorbed in a chemical reaction
Titration helps determine the precise endpoint of a reaction
, MTTC Integrated Science Questions And
Answers
Metric system - meter: length
- liter = volume
- gram = mass
Graphs of independent vs dependent variable *independent variable = what is being
manipulated is on the x-axis
*dependent variable = the ones that may change as the independent variable changes is on the y-
axis
5 skills developed from the National Science Education Standards 1. understand scientific
concepts
2. appreciate "how we know" what we know in science
3. understand the nature of science
4. Develop the skills necessary to become independent inquirers about the natural world
5. develop the skills necessary to use the skills, abilities, and attitudes associated with science
, MTTC Integrated Science Questions And
Answers
Scientific fact an objective and verifiable observation
Scientific theory greater body of accepted knowledge, principles, or relationships that
might explain why something happens
Hypothesis - an educated guess that is not yet proven
Law an explanation of events that always leads to the same outcome.
Scientific Method 1. identify a problem or posing a question
2. formulating a hypothesis or an educated guess
3. conducting experiments or tests that will provide a basis to solve the problem or answer the
question
4. observing the results of the test
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