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Showing posts with label term 4 week 4 2018. Show all posts
Showing posts with label term 4 week 4 2018. Show all posts

Friday, November 9, 2018

pH Scale Quiz

Today in science our class did the pH scale quiz. I was working with my friends Shontelle and Tehya. The questions were interesting and I also learnt about hydrogen. 

 Task 1
Complete the quiz below

Neutral solutions have a pH of 0 7 14

What colour represents neutral on the pH scale Blue Red Green

What is the range covered by the pH scale 0-14 -10 - 10 0-100

pH is a measure of hydrogen ions Oxygen Hydrogen Hydroxide

Acids and bases can combine to create water and salts True False

Which is not a property of a base Sour taste Bitter taste Slippery

There are a variety of strengths of acids and bases True False

Vinegar is an example of a Strong base Strong Acid Weak Acid

An acid’s pH is between 0-7 7-14 14-21

What is true when acids and bases neutralize each other;

Water is produced Salt is produced Both water and salt are produced

Does baking soda have a pH of 9?   Explain your answer

Baking soda is also known as sodium bicarbonate, and yes it does have a pH of 9 because it makes it a mildly alkaline substance.
Task 2

Create a doc illustrating the pH scale.
Image result for pH is a measure of ____________ ions