A teacher asks her students to create a model of methane (CH4). She gives them a collection of red, blue, and black beads to build their model.
Molecular Model Key
Matertal What Material Represents
Red bead One hydrogen atom
Blue bead
One oxygen atom
Black bead One carbon atom
How many of each color bead will students need to create a model of a molecule of methane (CH4)? Move the number of beads needed to
the correct spaces in the table.

d. temperate deciduous forest

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

false it is never safe to stand on the top step of a ladder provided it is braced properly.