Acids are common in our everyday lives. Some strong acids can be dangerous and can burn your skin if you touch them. Even your stomach has an acid what is this acid called?
What is hydrochloric acid?
100
can show us whether something is an acid, an alkali or neutral.
What is litmus
100
Your skin is naturally slightly acidic; it has a pH of about 1._______ and is what colour 2. _________
What is 5.5 and orange
100
Bases are sometimes called ___________.
What is alkalis
100
Substances that are neither acids or bases are called?
What is neutral
200
Acids taste _________ like _________ and make our teeth feel rough.
What is SOUR like LEMONS
200
However, simple indicators can not tell us if an acid or alkali is strong or weak. To find this out, we use a mixture of of INDICATORS to give a range of different colors. This mixture is called:
What is universal indicator.
200
The hydrochloric acid in your stomach has a pH of 1. or 2.
Name the colour and of acid and give 2 examples of 2 other acids
What is red and battery acid and gastric acid?
200
When a base dissolves in water to form a solution, its called an ___________?
What is alkali.
200
Give 3 examples of neutral substances.
What is pure water, salt and sugar solutions are all neutral
300
Many foods contain acids. Vinegar is an acid. What is vinegar made of _________ acid and ______.
What is acetic acid and water?
300
Universal indicator comes as a ___________ or as _____ papers
What is liquid or as test papers.
300
What are remedies (medicine) for if you produce to much acid and suffer from indigestion, or heartburn called and give an example
What is Remedies like milk or Magnesia are called ANTACIDS.
300
How do bases feel when they are mixed with water?
What is slimy or soapy.
300
Acids and bases 'cancel' each other out. What does this mean? _________ + _________ = ___________
What is ACID + BASE = NEUTRAL
400
Tinned food often contains ________ acid mixed with sugar, ______ and _______.
What is citric acid mixed with sugar, salt and water.
400
Universal indicator gives the same range of colors as a rainbow 1.___________ 2.____________3.____________4.___________5.________6.___________
What is red, orange, yellow, green, blue and purple.
400
Can either be blue or red.
What is litmus paper?
400
All bases have a _________ and _________ taste.
What is bitter and unpleasant taste.
400
A neutral has a pH of 7. It is neither acid nor basic. The PROCESS of adding acid to base (or the other way round) to make a neutral solution is called
What is neutralization.
500
Tea and Tomatoes also contain acids. (True or False)
What is True
500
The numbered scale which runs from 1 to 14
What is pH scale.
500
Blue litmus paper turns red under _________ conditions and red litmus paper turns blue under ___________(or) __________ conditions.
What is acidic conditions and red litmus paper turns blue under basic or alkaline conditions
500
Strong bases can burn our skin. Do not taste or feel strong bases. We use bases to remove dirt and grease. Most household cleaners contain bases. Most bases have the word ___________ in their scientific names. In science we write _____________ as ____.
What is hydroxide in their scientific names. In science we write hydroxide as OH
500
If you add the exactly the right amount base to an acid what will the pH number be?