The document provides instructions for precisely and accurately measuring mass, volume, and length using common laboratory tools. It explains that mass is measured in grams using a triple beam balance by evenly distributing weights across the beams until the pointer balances at zero. Volume of liquids is measured in milliliters using a graduated cylinder by reading the bottom of the curved meniscus line at eye level. Length is measured using a metric ruler by lining up the 0 centimeter mark with the end of the object.
4. Place an object on the pan. ºÝºÝߣ the rider with the largest mass along its beam until the pointer drops below zero. Move it back one notch. Repeat the process on each beam until the pointer stays at zero. Add the masses on each beam to find the mass of the object.
8. A meniscus is the curve of the surface of the water in a graduated cylinder. Water "sticks" to the walls of the graduated cylinder, but only on the sides and not the middle.? When you look at the surface, the water level is not straight ¨C it¡¯s curved like a smile.?
9. Measurement should be at the BOTTOM of the meniscus. Read the meniscus at eye level in to get an accurate reading.? read the meniscus at eye level. Read the volume here
11. Most metric rulers have lines indicating centimeters and millimeters. The centimeter lines are the longer, numbered lines. The shorter lines are millimeter lines. When you use a metric ruler, line up the 0-centimeter mark with the end of the object being measured.