MTTC Integrated Science Exam Questions and Answers 100% Accurate!

Observational recordings - ANSWER-- should not be altered, erased, or whited-out to make corrections - drawing a single line through it Parts of a lab report - ANSWER-1. title 2. abstract - contain the hypothesis - include a control and one variable 3. introduction 4. methods 5. results 6. conclusion / summation Volumetric flask - ANSWER-- used to accurately prepare a specific volume and concentration of solution Erlenmeyer flasks - ANSWER-used for mixing, transporting, and reacting NOT appropriate for measuring Meniscus - ANSWER-where the liquid measurement is read Graduated cylinders - ANSWER-- precise measurements - more accurate than Erlenmeyer flasks or beakers Burette - ANSWER-- glassware to accurately dispense liquid - has a stopcock and a tip Typical vs. Compound microscope - ANSWER-- typical = 1 lens - compound = 3 lenses Chromatography - ANSWER-set of laboratory techniques used to separate or analyze mixtures Diluting Acids - ANSWER-- always add the concentrated acid solution to water Centrifuge - ANSWER-- 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 - ANSWER-used to determine the heat released or absorbed in a chemical reaction Titration - ANSWER-helps determine the precise endpoint of a reaction Metric system - ANSWER-- meter: length - liter = volume - gram = mass Graphs of independent vs dependent variable - ANSWER-*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 - ANSWER-1. understand scientific concepts 2. appreciat