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What is a rotameter? An orifice meter?
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- Posttest Direction. Read the questions carefully. Write the letter of the correct answer. 1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation b. condensation d. Sublimation 2. Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which of the following is the BEST evidence that a chemical reaction occurs when the coal burns? a. Production of mechanical energy c. A new substance is produced b. Production of electricity d. Formation of precipitate 3.Which of these does NOT happen during a chemical change? a. New substances are formed with different chemical properties. b. Attractive force between atoms of molecule formed or break. c. The chemical properties of the substances before and after the reaction are the same d. Energy is always released or absorbed. 4. A granular substance is added to a liquid. Which of the…noology 9 SCIENCE GRADE 7: Sec 003 PER X New Tab A bcps.schoology.com/common-assessment-delivery/start/3334424616?action=Donresume&submissionld=D49290 S Links 9 Schoology 9 Schoology A student rubbed a plastic rod on their cat's fur to see how that would affect the way that it interacted with a Styrof outcome of the test. 00:24 D 00:00 You should have noticed that the Styrofoam ball rolled slightly towards the rod and then appeared to be lifted abc explains why the rod was able to lift the Styrofoam ball? O magnetism gravity O static electricity O electromagnetismWhat is a pipette and how is it used?
- What are the uses of Laboratory Apparatus below: 1. Aspirator or Pipette Bulb 2. Evaporating Dish 3. Mortar and Pestle 4. Graduated Pipette 5. Acid Burette 6. Spatula 7. Stirring RodFilter paper can be added to the developing chamber to help saturate the chamber with solvent vapor. Group of answer choices True False5. Which tablet size and the liquid combination resulted in the fastest dissolution times? A. crushed, room temperature water B. crushed, hot water C. crushed, room temperature vinegar D. broken, hot water E. broken, room temperature vinegar 6. What is the relationship between particle size and the time it takes for the tablet to dissolve? A. direct proportion B. inverse proportion C. combined proportion D. joint proportion 7. Using the activity as a model, how does mechanical weathering (breaking or crushing) contribute to chemical weathering (dissolution)? A. Increases size of particles B. Decreases dissolution time C. Increases surface area D. Both A and B E. Both B and C
- A tire pressure gauge reads 33.0 pounds per square inch . How many kPa is this? Remember that multiple steps may be required in the conversion. STARTING AMOUNT ADD FACTOR ANSWER RESET 0.001 33.0 0.98692 1 10 0.00222 1.01325 760 1.01325 x 10 14.70 101.325 227 2.27 1000 psi bar Pa mm Hg atm tor kPa MacBook Air 20 24 2 3 41 5 6 RI DPART3-1ABORATORY FQUIEMENT FQUIPMENTNAME FUNCTION To hold test tubes. Attaches to a retort stand to support glassware being heated. To pour liquid from a large container into a small container. To provide a flame during an experiment. To light the Bunsen burner. To attach test tubes to a retort stand. To clean substances out of a test tube. To hold a hot crucible or flask. To hold a hot test tube. To place on the lab bench to prevent burning or to use with ring clamp. To transfer small amounts of liquid. To grow bacteria or contain small experiments. To hold liquids. To measure liquids. To contain experiments (a stopper can be used to close the flask). To hold a hot beaker. To perform an experiment with a different substance in each well. To hold chemicals and perform experiments in. To scoop and transfer small amounts of substances. To stir during experiments that involve mixing or dissolving.Select the piece of equipment that should be used to carry out the specified task in each example. 1. Accurately measuring the volume of a liquid graduated cylinder beaker Erlenmeyer flask pipet 2. Removing solid chemicals from a reagent bottle tongs pipet beaker spatula 3. Rrecisely transferring a specific volume of solution from bne container to another pipet volumetric pipet graduated cylinder beaker 4. Holding approximately 250 mL of liquid volumetric flask buchner funnel beaker graduated cylinder 5. Heating a water bath to boiling hot plate wire gauze buchner funnel ring stand 6. Dispensing or delivering an accurately measured volume of liquid into a container graduated cylinder beaker volumetric flask burette 7. Preparing a solution that is precisely 100 mL volumetric flask Erlenmeyer flask pipet beaker 8. Cooling hot glassware spatula wire gauze burette clâmp hot plate 9. Filtering or separating a precipitate from a solution Erlenmeyer flask pipet buchner funnel tongs 10.…