A chemical equation is a way of describing how
A.
a mixture of substances are separated into two or more pure substances that do not react with each other.
B.
pure substances are combined into a mixture that has the same properties as the original substances.
C.
pure substances change to produce one or more pure substances with different properties from the original substances.
D.
a mixture of substances change to produce one or more mixtures with the same properties as the original substances.

Heat is the amount of heat required to change the temperature of 1 gram of a substance by 1°c, and it is related to the chemical composition of the substance.

Plants are used for so many things. in your house alone, you can probably look around you and see where plants have been used. for this project, you will identify various uses of plants in your home. directions make a list of objects, products, and any other items around your house where plants were involved in the production of the item. you should have a list of at least twenty items. then respond to the following questions: note: your list of objects and the answers following should be at least 200 words in length. what if plants no longer existed on earth? how would your life be different?

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.