Select the statement that is not a general lab safety rule. Keep personal belongings such as backpacks and coats away from the aisles and lab benches. No running, pushing, or horseplay of any kind is allowed. Check glassware for chips or cracks prior to use. All of the choices are general lab safety rules.

Select the statement that is not a general lab safety rule. Keep personal belongings such as backpacks and coats away from the aisles and lab benches. No running, pushing, or horseplay of any kind is allowed. Check glassware for chips or cracks prior to use. All of the choices are general lab safety rules.

Living By Chemistry: First Edition Textbook

1st Edition

ISBN:9781559539418

Author:Angelica Stacy

Publisher:Angelica Stacy

ChapterU1: Alchemy: Matter, Atomic Structure, And Bonding

SectionU1.1: Tools Of The Trade: Lab Equipment And Safety

Problem 2E

See similar textbooks

Similar questions

Which of the following statements is not correct concerning lab safety rules? Lab instructor must be notified if there is a mercury spill due to a broken mercury thermometer. The wearing of shorts, tank and sandals is permitted in the laboratory. Fire alarms, fire extinguishers, showers, and eye washing device, are examples of safety equipment's in your lab. Clean pipets and droppers cannot be inserted into the original reagent bottle.
Read the scenario below. Identify what is inappropriate lab behavior in each instance. Then write the appropriate lab safety technique. Kendra is heating a test tube for an experiment using a Bunsen burner. She didn't put on safety goggles since she already wears glasses. She tilts the test tube mouth away from her towards her lab partner, since the steam keeps fogging up her glasses.
Different types of gloves protect against different types of chemicals. true false
Which PPE should the experimenter wear when performing the experiment in the lab? O Apron Flame-resistant lab coat Nitrile gloves Face shield O Goggles
Describe the purpose of pictograms of safety in the chemistry lab. Provide examples ofcommon pictograms and explain their meanings
When purifying a sample of aspirin that was produced in the lab, the impure aspirin sample should be dissolved in a very cold solvent, so that solid impurities can be filtered and analyzed the next day or the next week. True or False?
Which activities are likely to cause contamination of stock chemicals in the laboratory? pouring out chemicals from the stock container into another container returning unused stock chemicals to their original container at the end of an experiment swirling the container of stock chemicals to ensure that the contents are thoroughly mixed spilling some of the chemicals on the lab bench and then returning them to the original container inserting a dirty pipet into a container of stock chemicals
PART 3- LABORATORY EQUIPMENT EQUIPMENT NAME 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. ones 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.
Pre-lab question #4: Distinguish between volatile and nonvolatile substance. The word "volatile" refers to a substance that vaporizes readily. Volatility is a measure of how readily a substance vaporizes or transitions from a liquid phase to a gas phase. A A (volatile/nonvolatile) substance refers to a substance that does not readily evaporate into a gas under existing conditions. A AA (volatile/nonvolatile) substance is one that evaporates or sublimates at room temperature or below.
STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.
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.…
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…