
2.2 Lesson 2 - Formation of compounds
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Science
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8th Grade
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shahir babu
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6 Slides • 7 Questions
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2.2 Lesson 2 - Formation of compounds
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Watch video and answer the following questions
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Multiple Choice
Atoms of same elements combine and form
Molecule
Compound
4
Multiple Choice
Atoms of different elements combine and form
Molecule
Compounds
5
How is a compound formed?
lose their valence electrons
gain more valence electrons
share their valence electrons
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Multiple Select
Compounds are formed by
lose their valence electrons
gain more valence electrons
share their valence electrons
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ALEF Lesson 18 Slide 3
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A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule
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Multiple Choice
Chemical formula of Water
CaCO3
H2O
CO2
10
Multiple Choice
Chemical formula of Carbon dioxide
H2O
CO2
CaCO3
11
Multiple Choice
Chemical formula of Table salt
H2O
CO2
NaCl
12
Multiple Choice
How many Hydrogen atom is there in H2O
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2
3
4
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Complete Alef Lesson 18
2.2 Lesson 2 - Formation of compounds
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