Lesson Plan of Introduction to Atoms too Molecules
General Science Grade VI
Students’ Learning Outcomes
· Different betwixt an atom too a molecule.
· Recognize the symbols of closed to mutual elements.
· Differentiate betwixt elements, compounds too mixtures.
· Identify examples of closed to compounds too mixtures from their surroundings.
Information for Teachers
Concept Map
· Matter is anything that takes upwards infinite too has mass.
· All thing is made of atoms.
· Atoms are the edifice blocks of matter. Kinds of how bricks of the edifice blocks of the houses.
· Atom: The basic unit of measurement of a chemic element.
· Atom: An extremely little sum of a thing or quality.
· An element is a pure chemic marrow which contains same type of atoms.
· A molecule is the smallest particle inward a chemic chemical element or chemical compound that has the chemic properties of that chemical element or compound. Molecules are made upwards of atom second that are held together yesteryear chemic bonds. These bonds cast every bit a lawsuit of the sharing or central of electron second amid atoms
· A symbol is a missive of the alphabet used to correspond something.
· Chemists role symbols to correspond elements. Chemists role ane or 2 letters to correspond elements.
· The symbol for aluminum is Al.
· The symbol for oxygen is O.
· A compound is a marrow formed when 2 or to a greater extent than elements are chemically joined.
· Water, salt, too saccharide are examples of compounds.
· When the elements are joined, the atoms lose their private properties too receive got dissimilar properties from the elements they are composed of.
· A chemic formula is used every bit a quick means to exhibit the composition of compounds.
· Molecules of chemical element receive got same sort of atoms land molecules of chemical compound receive got dissimilar sort of atoms.
· A mixture is made upwards of 2 or to a greater extent than dissimilar substances which are mixed together only are non chemically combined.
Material / Resources
Paper clips (12 of each color i.e. green, crimson too yellow), sulfur powder, atomic pose out 26 fillings, china dish, burner/spirit lamp, bar magnet
Worm upwards action
· Write the tidings “Atom” on board too inquire students to tell what they know almost an “Atom”
· Write their reply on board too hand a brief comport upon to each answer.
Introductory Activity
· Draw equal sized little circles every bit shown below inward the box- a on board.
· Draw circles larger inward size than those of box- Influenza A virus subtype H5N1 every bit shown inward the box – B on board.
· Each circle represents an atom.
·
· Ask students to observe/see the circles too reply the next questions.
o Can nosotros correspond atoms yesteryear little circles?
o Are these circles of the same size of both boxes?
(Tell the students that atoms of the same size too shape cast a pure marrow known every bit an element).
o Can circles of both the boxes Influenza A virus subtype H5N1 & B correspond atoms of the same element?
o Define an chemical element inward your ain words.
Development
Activity 1
· Divide students inward groups; render dissimilar colored newspaper clips to each grouping too say:
· A dark-green newspaper fighting represents a hydrogen atom (symbol H).
· A crimson newspaper clip represents an oxygen atom (symbol O).
· A blueish newspaper clip represents a carbon atom 9symbol C).
· Ask students to concord ane crimson newspaper clip inward each manus too ane time again ask. Can yous consider it an atom?
· instruct students to:
o Combine 2 crimson newspaper clips too exhibit it to the teacher. (Ask: what is it? is this an atom or something else?)
o Introduce the term “molecule”. Tell students that atoms combine to cast a molecule. When 2 oxygen atoms combine they cast an oxygen molecule.
o Ask: tin dissimilar atoms cast a molecule? (Yes/No)
o Yes, write the formula of H2O (water) on board too inquire groups to bring upwards atoms introduce inward H2O.
o Students to attach 2 dark-green newspaper clips amongst ane crimson newspaper clip. This is the model of H2O.
o Ask students to cast the construction / model of CO2 (Carbon dioxide) yesteryear using newspaper clips of respective colors. (2 crimson newspaper clips amongst ane xanthous newspaper clip). Give feedback if required.
Activity 2
· Introduce “mixture” too write its definition on board. “When 2 or to a greater extent than than 2 substances are mixed inward such a means that no novel marrow is formed”.
Step 1:
Divide students inward groups too instruct them to:
o Take closed to sulfur crystals inward a china dish.
o Mix them amongst closed to atomic pose out 26 filings.
o Observe the mixture whether its constituents receive got lost their master properties or not.
o Move a bar magnet inward the mixture.
o Observe what happens.
o Show the lawsuit to the teacher.
· Ask how is it a mixture? (Explain it is a mixture because atomic pose out 26 too sulfur tin live on
· img
· Step 2:
Divide students inward groups. Give them cloth too instruct them to:
o Mix atomic pose out 26 filings amongst sulfur crystals inward a china dish.
o Heat the mixture strongly.
o Observe what happens amongst atomic pose out 26 too sulfur.
o Let the thing cool to room temperature.
o Move a bar magnet inward the marrow introduce inward china dish.
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Conclude the action yesteryear asking:
· Q1: Why don’t atomic pose out 26 filings split upwards from the marrow formed on heating the mixture?
(Expected response: Due to heating, the atomic pose out 26 filings reacted amongst sulfur chemically too formed a novel compound)
· Q2: What type of marrow is formed on heating the mixture of sulfur too iron?
(Expected response: Iron sulphide)
· Q3: hand examples of closed to mutual compounds too mixtures.
(Expected response: Compounds: water, mutual salt, Mixture: Air, steel, H2O ice cream)
Sum upwards / Conclusion
Explain children that nosotros learn:
· The smallest particle of an chemical element is atom.
· Atoms of dissimilar elements receive got dissimilar sizes too combine to cast compounds.
· Atoms can’t be independently except that of noble gases.
· Components of mixtures tin live on separated yesteryear physical methods.
· Molecules of chemical element receive got same sort of atoms land molecules of chemical compound receive got dissimilar sort of atoms.
Assessment
Ask:
· What is an atom?
· What is the departure betwixt an atom too a molecule?
· What is H, C, O?
· Tell them that atoms/elements are recognized yesteryear “symbols” which is the shortest bring upwards of an element. Show students a periodic tabular array too receive got a brief give-and-take on the symbols of the next similar He, Na, N, Ca, fe elements.
Follow up
· Make the next models amongst the help of the colored newspaper clips.
·
· List downwards 4-4 examples of mixtures & compounds occurring/present inward our surroundings.
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