ELEMENT COMPOUND AND MIXTURE By Lin Suhartati SMP
ELEMENT, COMPOUND, AND MIXTURE By Lin Suhartati SMP N 1 BANJARNEGARA
BASIC COMPETENCE Comparing the characteristic of element, compound, and mixture
DEFINITION OF ELEMENT § Element is a single matter that cannot be broken down into other matters by chemical reaction. § These elements are found in compounds. Ex: sodium is found in s § Example : mercury, iron, copper, gold, silver, carbon, etc.
DEFINITION OF COMPOUND Compound is a single matter that consist of two or more elements. l Compound can be broken down into its elements by a chemical reaction. l Example: pure water, sugar, salt vinegar, urea, etc. l
DEFINITION OF MIXTURE n n Mixture a combination of two or more matters. The components of a mixture do not react one another. Mixtures can be grouped into two types, homogeneus and heterogenous mixture. Example : syrup, milk, soil, air, sand, sea water, etc.
EXERCISE 1. Which of the following substance are elements? a. gold d. water b. silver e. air c. bronze d. iron
2. What are the element names of of the following symbols? a. Al f. Ca b. Au g. N c. Ag h. C d. Ni i. Cu e. Na j. Ne
3. Name the elements of the following compound and mention the number of atoms in each compound: a. baking soda (Na. HCO 3) b. caffein ( C 8 H 10 N 4 O 2) c. vinegar ( C 2 H 2 O 4) d. carbon dioxide (CO 2)
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