Science Measuring pH

Unlock all answers in this set

Unlock answers
question
The measure of how acidic or basic a solution is
answer
pH
question
What is pH a measure of specifically?
answer
The concentration of hydronium ions/H*3*O+ (hydrogen ion concentration) present in a solution
question
What the pH scale have?
answer
Values ranging from 0 to 14
question
If a solution is 0-6 on the pH scale, what is it?
answer
An acidic solution
question
What does an acid solution have?
answer
More H*3*O+ ions than OH-
question
The lower the pH value, the more ________ there are and the more __________ the solution will be.
answer
H*3*O+ ions; acidic
question
If a solution is 7 on the pH scale, what is it?
answer
Neutral
question
If a solution is 8-14 on the pH scale, what is it?
answer
Basic
question
The higher the pH value, the more __________ there are and the more _________ a solution is.
answer
OH- ions; basic
question
What are some examples of acids?
answer
Lemon juice, vinegar, milk, stomach acid, apple juice, and black coffee
question
What are some examples of a neutral solution?
answer
Pure water, saliva
question
What are some examples of bases?
answer
Ammonia, antacid tablets (when dissolved in water), baking soda, hand soap, and drain cleaner
question
What are three methods used to measure pH?
answer
Acid-base indicators (bromthymol blue), universal pH paper, and electronic pH meter
question
How do acid-base indicators work?
answer
They change colors at certain pH ranges and they don't give a certain pH number
question
How does universal pH paper work?
answer
This paper has been infused with several acid-base indicators and turn into different colors depending on the pH of the solution. The color is compared to a reference card that shows the pH
question
How does an electronic pH meter work?
answer
It provides a precise pH value
question
Which method of measuring pH is most accurate?
answer
The electronic pH meter
question
Plants and animals are healthier when what?
answer
The environment is within a certain pH range
question
What happens when the soil is too acidic or too basic?
answer
The nutrients that the plants need do not dissolve into the water into the soil
question
Why is the pH of soil important?
answer
Because too acidic or too basic soils cannot provide nutrients the plants need to grow
question
*Any form of precipitation that has a lower pH than normal* Precipitation that's not pure water since it contains CO*2*
answer
Acid rain
question
What is normal rain pH?
answer
Somewhere between 5 and 6
question
How is acid rain formed?
answer
Fossil fuels are burned, and they release fuels in the air, such as sulfur oxides and nitrogen oxides. Those chemicals combine with the water in the atmosphere to form sulfuric acid and nitric acid which forms acid rain. It forms acid rain when those chemicals dissolve in precipitation
question
What harms can acid rain do?
answer
*It can damage ecosystems by lowering the pH of bodies of water* It can harm aquatic species and other organisms that rely on water for survival *It can damage leaves of plants* It can lower pH of soil *It can damage buildings and sculptures made of limestone and marble* It damages paint and makes metal corrode faster
question
For the human body to work properly, what must happen?
answer
The pH must be in balance
question
How do stomach acids help humans?
answer
They help digest foods
question
What is the normal stomach pH?
answer
About 2.5. It can drop to 1.5 to help digestion
question
What two factors can lead to indigestion?
answer
Difficulty digesting food and low pH
question
How do antacid tablets help with indigestion?
answer
They are basic and they restore the pH back to normal
question
What is normal blood pH?
answer
The pH range is from 7.35 to 7.45
question
Why do you need to keep blood in it's normal pH?
answer
To maintain good health
question
Condition for when blood becomes too acidic
answer
Acidosis
question
Condition for when blood becomes too basic (aka alkaline)
answer
Alkalosis
question
What are the effects of the sulfuric oxides released during a volcanic eruption?
answer
They help form acid rain
Get an explanation on any task
Get unstuck with the help of our AI assistant in seconds
New