Chemistry B: Energy Transfer 1- Quick Check

Which type of reaction is occurring during a fireworks show? How do you know? -It is an endothermic reaction. Fireworks are bright, indicating a release of light energy. -It is an endothermic reaction. Heat must be added to light the fuses of the fireworks. -It is an exothermic reaction. Heat must be added to light the fuses of the fireworks. -It is an exothermic reaction. Fireworks are bright, indicating a release of light energy.

It is an exothermic reaction. Fireworks are bright, indicating a release of light energy.

The products of a particular reaction have more energy than the reactants. Which type of reaction has occurred? -radiation -endothermic -convection -exothermic

endothermic

Which is conduction? -energy transfer as electromagnetic waves -energy transfer from a reaction system to its surroundings -energy transfer by direct contact -energy transfer by currents of moving liquid or gas

energy transfer by direct contact

In photosynthesis within one plant, other plants would be considered the _____ -surroundings. -reactants. -system. -products.

surroundings

What is a chemical reaction system? -a container in which chemical reactions take place -everything outside the reaction -the reactants and products in a reaction -a diagram used to show energy changes in a reaction

the reactants and products in a reaction