What percent of spring water is considered spring water?
10%
100
What does ppb stand for?
parts per billion
100
What pH is neutral?
7
100
The process of making a solution neutral
Neutralization
100
A narrow plastic tube where small amounts of liquid are suctioned for transfer or measurement.
Pipet
200
To add more water to a solution so that there is more solvent than solute is ______
Dilute, Dilution, Diluting
200
What's the name of the doctor who helped track deaths of cholera?
Dr. Snow or Dr. Whiting
200
What are the three indicators we worked with in class?
Universal indicator, Phenolphthalein, pH paper
200
Pictures, diagrams, or other representations of objects or processes are examples of what?
Models
200
Which country in the video had the cholera problem?
Zimbabwe
300
What is the name of the disease discussed in class that was spread by a bacterium in the water through person-to-person contact
Cholera
300
What can be harmful to humans in its pure form but kills microorgnisms in water?
Chlorine
300
The value that is used to express how acidic or basic a solution is.
pH
300
An average or normal requirement, quality, quantity, level, grade, etc.(usually used for measurement)
Standard
300
What is the solvent in Kool Aid?
a) water b) kool aid mix
Water
400
What is a point or level that your senses can detect or identify a substance or change?
Sensory Threshold
400
The following statement is an example of what?
Chlorinating water may lead to cancer but not chlorinating water can leave untreated microorganisms in the water.
Trade off
400
One drop of a(n) _____ is equal to two drops of a(n)_____
1. base 2. acid
400
This is used to determine if another substance is present.
Indicator
400
Process of making a substance weaker or less concentrated several times by the same amount each time.
Serial Dilution
500
What is distilled water?
Water that has been heated and recondensed leaving any impurities of the water behind.
500
How is cholera spread and caused?
Spread through water supply, caused by waste in the water or food
500
Why is the pH of water important to living things?
If drinking water is too acidic or basic, it may be harmful to human health