Select true or false for the following statements. __Vaporization is when a substance goes from a gas to a liquid. __The temperature of a substance does not change during a phase change. __ It always takes the same amount of energy to change a substance from solid to liquid as it does to change it from liquid to gas. __ A substance can exist in two different states of matter at the same temperature. __ The negative sign in the equationQ=± mLrepresents when thermal energy is being taken away from a substance during a phase change. __ The temperature of a substance changes during a phase change.
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.
Select true or false for the following statements.
__Vaporization is when a substance goes from a gas to a liquid.
__The temperature of a substance does not change during a phase change.
__ It always takes the same amount of energy to change a substance from solid to liquid as it does to change it from liquid to gas.
__ A substance can exist in two different states of matter at the same temperature.
__ The negative sign in the equationQ=± mLrepresents when thermal energy is being taken away from a substance during a phase change.
__ The temperature of a substance changes during a phase change.
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