Chemical and physical changes
Cutting a paper is this type of change.
What is a physical change.
The change that will occur when an apple is rotting.
What is the color is changing from yellow to brown.
True or false, the reactants appear after the arrow.
What is False: The formulas of the reactants appear before the arrow.
The total mass of the reactants will total the mass of this.
What is the total mass of the product.
Melting water is this type of change.
What is a physical change.
The change that occurs when an egg is rotting.
What is a new smell (it smells like sulfur).
The sign used between each reactant in a chemical equation.
What is a plus sign.
The chemicals on the left side of a chemical equation.
What are reactants.
Mixing vinegar and a baking soda is this type of change.
What is a chemical change
The change when you are burning paper
What is the paper is being transformed into smoke and ashes.
The symbol that separates the reactants and the products.
What is an arrow.
The chemicals on the right side of a chemical equations are.
What is products.
Mixing salt and water is this type of a change.
What is a physical change
The solid that is formed by the chemical reaction of some solutions.
What is a precipitate.
The reactants and the product must be this in order for the chemical equation to be balanced.
What us equal.
According to the law of conservation of mass, all the atoms present before the reaction begins will also be.
What is present after the reaction ends.
The main difference between a physical and a chemical change.
What is a physical changes do not produce new substances while chemical changes produce new substances.
Name six indicators of chemical changes.
What is change in color, change in odor, energy change, formation of gas, and formation of precipitate.
When a chemical reaction is reversed, the products break apart or combined to form this.
What is the original reactants.
The reasons why is mass conserved in chemical reactions.
What is when a chemical reaction is taking place, the atoms which form the reactants reorder and join in a different way but they do not change their mass when they reorder.