Identify the physical change from the list below: 1) Grinding coffee 2) Baking cake 3) Converting water to hydrogen and oxygen 4) Digesting a cheeseburger 5) Burning coal
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
In the world of science, changes in matter can be categorized into two main types: physical changes and chemical changes. Physical changes are those alterations in the physical properties of a substance that do not involve a change in its chemical composition. These changes can include modifications in state, size, shape, and other physical characteristics, while the substance itself remains chemically unchanged. In contrast, chemical changes result in the formation of new substances with different chemical properties.
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