Chemical Equations TEST

All of these are example of elements except-

• $Cu$

• $KI$
  

• $He$

• $H$

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8.5D

A chemical formula shows all of the following except-

• the number of atoms of each element

• the chemical symbols of elements

• the elements found in a compound

• the number of protons in a nucleus

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8.5D

All of these are examples of the chemical formula of a compound except-

• $H_2$

• $MgO$

• $SiO_2$

• $H_2O$

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8.5D

What is the appropriate subscript for oxygen in the models shown?

• 1

• 2

• 3

• 4

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8.5D

How many total atoms are in the compound $CuSO_4$  

• 3

• 4

• 5

• 6

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How many elements are in $2H_2SO_4$  

• 2

• 3

• 7

• 14

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 $2Li_3PO_4$  

How many molecules are found in the formula

• 2

• 3

• 4

• 16

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How many atoms of carbon are found in one molecule of glucose? $C_6H_{12}O_6$  

• 3

• 6

• 12

• 24

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In this reaction, what are the reactants?

• Sodium, carbon, and Iodine

• Sodium and chlorine

• Sodium chloride

• Sodium, chlorine, and sodium chloride

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8.5D

In the previous reaction, what is the product?

( 2Na + Cl₂ --> 2NaCl)

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8.5D