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A 7th Grade Scie... ► Noelani Berisa - atom 1.pdf
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15 Chemical Sustance Man is made up of TWO OT
more different kinds of atoms bonded together.
cech
Directions: Look at each picture below. Each circle represents an atom. If they are
touching, they are chemically combined. Each element is represented by a pattern.
Write the number of atoms, molecules, elements and compounds for each example on
the lines below. The first example has been done for you.
1
2
30
3
atom
molecule
clement
compound
1
2.
1
atom
molecule
element
compound
autom
molecule
element
compound
3
Answers: 3
Chemistry, 22.06.2019 13:50, kelonmazon2492
Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
Answers: 3
Chemistry, 22.06.2019 14:00, emilyproce
In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2
Answers: 1
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