Science (L2)

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Glass of Milk

Cards (17)

Chemical Reaction
It is a process where a particular substance or substances change into one or more new substances with different properties
Gas Production
Some chemical reactions result in the formation of gas. This means that substances have incomplete combustion or have insufficient supply of oxygen
Also called "Evolution of Gas"
Solid Production
Other chemical reactions result in the formation of solid substance or precipitate
Colour Change
There is a noticeable change in the color of the substance during a chemical reaction
Temperature Change
There is a noticeable change in the temperature during a chemical reaction
Exothermic
It occurs when the substance releases energy in the form of heat or light
It is often warm or hot.
Endothermic
It occurs when the substances absorbs or take in energy
It is often cold
Chemical Equation
It consists of symbols and formulas of the reacting substances and their products
Reactants
Are found at the left side of the equation
Products
Are found on the right side of the equation
Law of Conservation of Mass
It states that the mass of the product(s) and the mass of the reactant(s) in a chemical equation must be EQUAL
Addition
it is known as a combination or synthesis reaction.
Multiple reactants combine together to form a single compound
Decomposition
A compound breaks down into two or more simpler substances.
Are classified into thermal elctrolytic and photo
Single-Replacement
One element is substituted for another element in a compound generating a new compound and a pure element
Double Replacement
Two ionic compounds exchange cations or anions to form two new compounds. Forming a precipitate can help drive the reaction to the right
Combustion
A fuel typically a hydrocarbon reacts with oxygen gas to form carbon dioxide and water which generates heat and light
Neutralization
Acid and base combine to neaturalize each other in aqueous solutions usually resluting in a salt and water