Water melts at 0°C. A student observes a liquid that melts at 10°C. Which conclusion can the student reasonably draw? The bonds between water molecules are stronger than the bonds between molecules in the unknown liquid. The electrostatic forces between molecules in the unknown liquid are stronger than the electrostatic forces between water molecules. The average kinetic energy of water molecules is greater than the average kinetic energy of the molecules in the unknown liquid. O The molecules in water are farther apart than the molecules in the unknown liquid.
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.
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