Chemical Equations Flashcards
A compound is a pure substance made when two or more different elements chemically combine in fixed proportions. It has properties different from the elements it is made from. In every chemical reaction, at least one new substance is formed.
What is a compound
A substance that is made up of two or more different elements combined together chemically
Key Terms
What is a compound
A substance that is made up of two or more different elements combined together chemically
What is always formed when a chemical reaction occours
a new substance is always formed when a chemical reaction occours
What are the starting substances called
Reactants
What are the substances formed called
Products
What is the law of conservation mass
stated that the total mass of the products of a chemical euqation is the same as the total mass of the rectants
What is the law of conservtion matter
states that in any chemical reaction, mass is neither created or destroyed but merely changes from one form into another
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| Term | Definition |
|---|---|
What is a compound | A substance that is made up of two or more different elements combined together chemically |
What is always formed when a chemical reaction occours | a new substance is always formed when a chemical reaction occours |
What are the starting substances called | Reactants |
What are the substances formed called | Products |
What is the law of conservation mass | stated that the total mass of the products of a chemical euqation is the same as the total mass of the rectants |
What is the law of conservtion matter | states that in any chemical reaction, mass is neither created or destroyed but merely changes from one form into another |
What is a balanced equation | total number of atoms of each element on the left hand side of the equation is equal to the nuber of toms on the right hand side of the equation |
Describe the test for chloride atoms | Cloride (Cl-) |
Describe the test for Sulphate (SO4 2-) and Sulfite (SO3 2-) | Sulphate (SO4 2-) Sulfite (SO3 2-) |
Test for the presense of carbonate (CO3 2-) and Hydrogen Carbonate (HCO3-) | To carbonate (CO3 2-) and Hydrogen Carbonate (HCO3-) |
test for the presence of Nitrate ions (NO3-) | Dissolve nitrate salt in dissolved water |
Test for the presense of Phosphate ions(PO4 3-) | Dissolve phosphate salt in deionised water |