Presentation is loading. Please wait.

Presentation is loading. Please wait.

During a chemical change, substance and form new substances.

Similar presentations


Presentation on theme: "During a chemical change, substance and form new substances."— Presentation transcript:

1

2 During a chemical change, substance and form new substances

3  A Chemical Equation is a sentence that describes what happens during a chemical change

4  The original substances are the ones you have at the beginning.  They are called reactants because the take part in the chemical reaction.  Written on the left side.

5

6  The new substance formed during a chemical reaction is called the product and is written on the right side of the equation

7  It takes energy to break the chemical bonds.

8  The subscript is the small number that hangs below the line.  It tells how many atoms of each element are found in the molecule.  The coefficient is the large number in the front of the formula of the substance.  It tells how many molecules of the substance there are.

9

10  Total amount of mass and energy in the universe always remains the same

11  An equation must be balanced.  You must have the same number of atoms on both sides of the arrow in the equation.


Download ppt "During a chemical change, substance and form new substances."

Similar presentations


Ads by Google