IPS Quiz #1 Study Guide

Saftey Quiz, Heating Baking Soda Lab, and Measurement Lab

Safety Quiz ☢

  • Goggles must be kept over your eyes until Mr. Leeds says to put them away
  • Report all accidents to Mr. Leeds
  • Try your best to use common sense

  • Nurse: ext. 2828

  • Fire extinguisher
  • Fire blanket
  • Eye wash/shower

  • Never taste chemicals
  • Always WAFT liquids to detect odor
  • Avoid touching chemicals
  • Always wash hands with soap and water after lab
  • If chemicals touch skin: flush skin with water for 1 minute AND notify Mr. Leeds

  • Hot glass and cold glass look the same
  • Never use chipped or broken glass (tell Mr. Leeds and dispose of broken glass in proper trash)
  • Never use force to remove or insert glass

  • Roll up sleeves, put UP long hair, NOT just pull back (or you cannot do lab)
  • NEVER walk away from a lit burner
  • Never point the open end of a hot test tube at yourself or someone else
  • Do not look down into a test tube/beaker while it is being heated
  • Make sure burner is capped and flame is out when done

  • Make certain that burner is out if one was used
  • Keep goggles on (over eyes) until Mr. Leeds says to put them away

Reaction in a Bag → Lab (Quiz Notes)

Purpose → To observe and record reactions that occur when multiple chemical substances are combined and to use our observations to understand the reactions of the chemicals

  • Calcium chloride
  • Acidic
  • Hydrotrophic → it absorbs water
  • Sodium bicarbonate (baking soda)
  • Not acidic
  • Uses: toothpaste, cookies, cake, laundry detergent, cupcakes
  • Phenol Red
  • Used as a pH indicator → below 7 turns yellow, above 8 turns pink

Heating Baking Soda → Lab (Quiz Notes)

control group → unheated baking soda + tea

experimental group → heated baking soda + tea
indicator → tea

variables → a category you try to measure

independent variable → causes a change in the dependent variable (temperature - heat)

dependent variable → tea color

control factors (things you can control) → same type of tea, same amount of baking soda, same amount of tea, same size test tube, even out your stirring time

experimental errors → hole in the tubing or the stopper isn't snug = won't see the gas fill the bottle || not cleaning the stirring rod = contamination

Heating Baking Soda → Lab (Box Questions)

1. When heated, it releases a gas. It helps batter rise.

2. Glasses, microscope, thermometer

Volume Notes → (Quiz Notes)

unit of measurement → cm³ (cubic centimeter)

volume = L x W x H
unit of length = metric
centimeter = 0.1 meter
100cm = 1m

**use a graduated cylinder to measure volume**