3. Which is the minimum amount of energy required to start a chemical reaction?

A endothermic energy

B chemical energy

C activation energy

OD exothermic energy

A 100 kg tree gets struck by lightning and is burned completely to ash. A scientist gathers up all the ash and weighs it to find only 90kg there. Where did the other 10kg go?

Water boils at rate of ... and freeze at ...

What is the most important chemical reaction of the alkanes? substitution combustion displacement hydrogenation

What is the length of the line in centimeters? _ cm

Which is a product of a condensation reaction? 1. O2 2. CO2 3. H2 4. H2O

Why should you avoid wearing baggy clothes in the lab?

How does the concept of reversibility explain the establishment of equilibrium?

A corner test different weed killers on her along to see which kills the greatest number of dandelions ... What is the Independent variable; Dependent variable;

1. The effect of a catalyst on a chemical reaction is to provide a new reaction pathway that results in a different A) potential energy of the products B) heat of reaction C) potential energy of the reactants D) activation energy

Name three other planets besides Jupiter and Saturn in our system that we know have solid diamonds