This type of acid can clean a penny and is commonly used to cook and clean with
Vinegar
What happens to the weight of a penny after being cleaned
It gets lighter/it lessens
This type of acid is safe to eat. It's usually found in fruits, sour candy, and salad dressing.
Citric Acid
On the PH scale, any substance below a 7 (neutral) is considered an acid. Any substance above 7 is considered a _____.
Base
This gas is created when you mix vinegar and baking soda
Carbon Dioxide
Several solutions were used to try to clean a penny. This one worked.
Salt and Vinegar
What happens to the weight of the solution after a penny is cleaned
It gets heavier/weighs more
When you take the action of putting something in an acid, it almost always has a ______
This type of rock can be dissolved by acid
Limestone
The state of matter you get from mixing vinegar and baking soda
Gas
This type of reaction was caused when adding a penny to our "cleaning" solution
Chemical reaction
What happens to the color of our penny cleaning solution after a long period of time
It changes color/opacity
All acids have two things in common: they taste ______ and _________ metal
Sour; Dissolve
Although it can slowly dissolve materials over time, this type of precipitation can't hurt humans.
Acid Rain
A buildup of carbon dioxide in a closed container creates too much _______, causing an explosion
Pressure
This chemical reaction turns copper green
Oxidation
This type of reaction is caused when copper particles coat a steel nail
Physical reaction
This acid is strong enough to dissolve both metals and organic materials, such as a cheeseburger.
(S on the periodic table)
Sulfuric Acid
This visible reaction, caused by mixing an acidic liquid with baking soda, will tell you how acidic it is
Fizzes/Bubbles
When mixing certain chemical powders with fire, this is a reaction you might get
The fire can change color
The reason modern pennies cannot be cleaned in our "cleaning" solution
They are no longer mostly made of pure copper
An alchemist once convinced a king that he transformed the king's _______ into copper
Sword
Acid is the Latin word for _____
Sour
When you mix together two liquids like glue and borax, the physical _______ of each substance change
Properties
In ancient China, when trying to create an elixir of life, alchemists accidentally discovered this substance.
Gunpowder/Fireworks