Spot the false rule

Exercise and reference answers

Questions

1. False statement

   A free element sums to its mass

   Statements

   1. A free element sums to its mass
   2. A compound sums to zero
   3. A polyatomic ion sums to its charge

2. False statement

   A reductant is itself reduced

   Statements

   1. An oxidant is itself reduced
   2. A reductant is itself reduced
   3. Electrons move from reductant to oxidant

3. False statement

   Metals take only negative numbers

   Statements

   1. Transition metals show several states
   2. Nonmetals may take either sign
   3. Metals take only negative numbers

4. False statement

   Decomposition needs no elemental product

   Statements

   1. Decomposition needs no elemental product
   2. Peroxide oxygen disproportionates
   3. Displacement has two categories

Instructions

Two statements are true and one is false. Tap the false one.

Explanation