PrepA-Quiz

1. Correctly label the lab equipment images displayed. Use given words. Graduated cylinderTest tube brushGogglesTest tube clampBeakerFunnelForceps Graduated cylinder Electronic balance Test tube brush Test tube clamp Beaker Funnel Forceps Goggles 2. Review the following lab equipment descriptions below and correctly identifywhich pieceof equipment is being described. A thermometer used to measure temperature in degrees Celsius or Fahrenheit.A stirring rod is a long glass pole used for stirring.A hot plateis An electrical device used to heat things up.A test tube clamp is used to pick up and hold one hot test tube at a time.A beaker is a wide glass vessel with a lip or “beak” for pouring that can be used to mix or heat chemicals; not accurate for measuring volume.A microscope slideis a small flat rectangular piece of glass on which specimens can be mounted.A cover slip is a small and very thin piece of glass used to cover the specimen.A test tube rack is used to hold more than one test tube at a time; it can also hold test tubes upside down to let them dry after cleaning.A test tube brushis Used to clean test tubes. 3. Read each statement and decide whether it is true or false. TRUE Chemicals should never be tasted Everyone in the lab must know the location of safety equipment Spilled chemicals should be wiped up immediately FALSE The laboratory is a good place for practical jokes Only the teacher needs to know the location of the first-aid kit Only wear goggles if you want to look "cool" in the lab 4. Sort the students in the picture above on whether they are acting in a safe manner in the lab. SAFE Amy Carlos UNSAFE Xiomara Max Adrian Alma Micheal Ashley 5. Match given words with their definitions. The predicted outcome of an experiment or an educated guess about the relationship between variables. Hypothesis In an experiment, the condition being investigated as a possible cause of some change in behavior. This is what I change in the experiment. Independent Variables In a controlled experiment, the group of subjects exposed to all experimental conditions or variables except the independent variable. Control Group All the factors that the experimenter attempts to keep the same Constants Measure the results of the experiment, that is, they reveal the effects that independent variables have on behavior. This is what I observe as a result of experiment. Dependent Variables