Process Skills Review Warm-Up C

Home , Hot plate, Petri dish, Thermometer, Triple beam balance

Process Skills Review Warm-Up C. • Define function • Match the following

1. Puts out fire 2. Curved line of liquid in a graduated cylinder 3. Used to observe insects A. B. Which of the following describes the correct way to handle chemicals in a laboratory? A. It is safe to combine unknown chemicals as long as only small amounts are used. B. Return all chemicals to their original containers. C. Always pour extra amounts of the chemicals called for the experiment. D. To test for odors, always use a wafting motion. Which of the following describes the correct way to handle chemicals in a laboratory? A. It is safe to combine unknown chemicals as long as only small amounts are used. B. Return all chemicals to their original containers. C. Always pour extra amounts of the chemicals called for the experiment. D. To test for odors, always use a wafting motion. What task is being performed in the picture?

A. measuring mass with a graduated cylinder B. measuring length with a triple beam balance C. measuring mass with a triple beam balance D. measuring length with a metric ruler What task is being performed in the picture?

A. measuring mass with a graduated cylinder B. measuring length with a triple beam balance C. measuring mass with a triple beam balance D. measuring length with a metric ruler John and Lisa are conducting an experiment in their 7th grade science class in which they are handling potentially dangerous chemicals. As John is pouring a chemical from a beaker to a graduated cylinder, he splashes some of the chemical into his eyes. Determine what John should do first. A. Finish the lab B. Wipe John’s eyes with his lab apron C. Tell the teacher immediately D. Call the nurse John and Lisa are conducting an experiment in their 7th grade science class in which they are handling potentially dangerous chemicals. As John is pouring a chemical from a beaker to a graduated cylinder, he splashes some of the chemical into his eyes. Determine what John should do first. A. Finish the lab B. Wipe John’s eyes with his lab apron C. Tell the teacher immediately D. Call the nurse Mrs. Brown was completing an inventory of the science supplies available to her students. Which column includes safety equipment?

A B C D Meter Stick Hand Lens Fire Hot Plate Blanket Triple Beam Microscope Gloves Spring Balance Scale Graduated Thermometer Apron Test Tube Cylinder Mrs. Brown was completing an inventory of the science supplies available to her students. Which column includes safety equipment?

A B C D Meter Stick Hand Lens Fire Hot Plate Blanket Triple Beam Microscope Gloves Spring Balance Scale Graduated Thermometer Apron Test Tube Cylinder Match picture & function A. 1. Used to measure D. force 2. Used to test the quality of water B. 3.Used as an eye wash station for our class 4.Used to protect your eyes C. Match picture & function A. 4.Used to protect your 1. Used to eyes measure force D.

B. 2. Used to test the quality of water 3.Used as an eye wash station for our class

C. During Jack’s laboratory investigation, he had to use a candle and matches. Which lab rule would be most important during this lab experiment? A. Keep chemicals away from the eyes and skin. B. Move electrical equipment away from the water. C. Wash hands thoroughly with soap and water. D. Tie back any loose hair and oversized clothing. During Jack’s laboratory investigation, he had to use a candle and matches. Which lab rule would be most important during this lab experiment? A. Keep chemicals away from the eyes and skin. B. Move electrical equipment away from the water. C. Wash hands thoroughly with soap and water. D. Tie back any loose hair and oversized clothing. The following piece of equipment is a ______. A. graduated cylinder B. beaker C. forceps D. test tube The following piece of equipment is a ______. A. graduated cylinder B. beaker C. forceps D. test tube When cleaning up after a lab, if there are left over chemicals they should be – A. put in the trash B. put in the teacher assigned disposal container C. put back in the original container D. washed down the sink with plenty of water When cleaning up after a lab, if there are left over chemicals they should be – A. put in the trash B. put in the teacher assigned disposal container C. put back in the original container D. washed down the sink with plenty of water What is the temperature of the solution?

A. 30.15°C B. 38.5°C C. 31.5°C D. 31.0°C What is the temperature of the solution?

A. 30.15°C B. 38.5°C C. 31.5°C D. 31.0°C What is the first thing you should do when you get a lab assignment? What is the first thing you should do when you get a lab assignment?

Read all directions/procedures carefully What is the most precise at measuring liquids?

B. What is the most precise at measuring liquids?

B. Match picture & function A. 1. Used to measure E. length or distance 2. Used to measure time B. 3.Used to observe cells 4.Used to hold liquids 5. Used to measure temperature

D. C. 1. Used to measure A. length or distance 2. Used to E. measure time

B. 4.Used to hold liquids

3.Used to observe cells D. C. 5. Used to measure temperature What is the reading on the balance? A. 47.02g B. 47.7g C. 47.52g D. 47.2g What is the reading on the balance? A. 47.02g B. 47.7g C. 47.52g D. 47.2g

What does a balance measure? What units should you use? What does a balance measure? What units should you use? What does a balance measure? mass What units should you use? Grams (g) While working in the lab, Shelia masses 20 g of sodium hydroxide on the triple beam balance, then masses 20 g of sodium bicarbonate. Both are white powders but react to other chemicals in very different ways. Shelia is not certain which white powder is the sodium hydroxide. What should she do? A. Place both powders in the trash and start over B. Place a drop of water on a small amount of each powder and observe C. Proceed with the experiment D. Check with her teacher for guidance While working in the lab, Shelia masses 20 g of sodium hydroxide on the triple beam balance, then masses 20 g of sodium bicarbonate. Both are white powders but react to other chemicals in very different ways. Shelia is not certain which white powder is the sodium hydroxide. What should she do? A. Place both powders in the trash and start over B. Place a drop of water on a small amount of each powder and observe C. Proceed with the experiment D. Check with her teacher for guidance In which of these activities would a graduated cylinder be MOST useful? A. Determining the nesting areas of bird species living near the school B. Measuring the volume of an unknown rock sample C. Observing the heat flow that occurs when too liquids are mixed D. Comparing the different wing shapes of several flying insects In which of these activities would a graduated cylinder be MOST useful? A. Determining the nesting areas of bird species living near the school B. Measuring the volume of an unknown rock sample C. Observing the heat flow that occurs when too liquids are mixed D. Comparing the different wing shapes of several flying insects What instrument measures volume?

A. Petri dish B. Beaker C. Triple Beam Balance D. Graduated Cylinder What instrument measures volume?

A. Petri dish B. Beaker C. Triple Beam Balance D. Graduated Cylinder Which is the volume of the irregular solid in the beaker shown above? A. 125 mL B. 150 mL C. 275 mL D. 425 mL 275 150

Which is the volume of the irregular solid in the beaker shown above? A. 125 mL B. 150 mL C. 275 mL D. 425 mL Material State Speed (m/sec) Air Gas 346 Water Liquid 1493 Pyrex glass Solid 5640 Iron Solid 5130 A student measured the speed of sound in different materials at 25 oC. The data is shown in the table. Which tools were necessary for the students to carry out this experiment? A. Petri dishes, meter sticks and thermometers B. Calculator, petri dish, and timing devices C. Meter stick, timing devices, and a thermometer D. Petri dish, calculator and hot plates. Material State Speed (m/sec) Air Gas 346 Water Liquid 1493 Pyrex glass Solid 5640 Iron Solid 5130 A student measured the speed of sound in different materials at 25 oC. The data is shown in the table. Which tools were necessary for the students to carry out this experiment? A. Petri dishes, meter sticks and thermometers B. Calculator, petri dish, and timing devices C. Meter stick, timing devices, and a thermometer D. Petri dish, calculator and hot plates.