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How is burning wood in a campfire an example of a chemical change?

Log burning in a fire. Burning wood is an example of a chemical reaction in which wood in the presence of heat and oxygen is transformed into carbon dioxide, water vapour, and ash.

How does a chemical change affect the composition of matter quizlet?

How does a chemical change affect the composition of matter? The composition of matter always changes during a chemical change. In a physical change, the chemical composition of a substance does not change. In a chemical change, the chemical composition of the reactants changes as one or more products form.

How does chemical reaction change the composition of matter?

The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance. The same number of particles that exist before the reaction exist after the reaction.

How do physical and chemical changes affect the mass of a material?

The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass. In a physical change, a substance’s physical properties may change, but its chemical makeup does not. In chemical changes, just as in physical changes, matter is conserved.

Is loss of mass a physical or chemical change?

Matter is anything that takes up space and has mass. Matter is composed of atoms and molecules and is always changing its form by either physical or chemical changes. The Law of Conservation of Mass states that mass is neither created nor destroyed during any physical or chemical changes.

What stays constant in physical changes?

In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy. Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. Only their arrangement, energy and movement changes.