1. Any sample of matter has mass and takes up space. The main reason for this is because: * a. All matter is heavy b. Matter can be a gas C. The Earth is made of matter d. Matter is made up of tiny particles that have mass and take up space 2. Which of these substances cannot be broken down into different substance by simple chemical means? * a. Atoms b. Compounds C. Elements d. lons 3. Which of the following properties is different for solids, liquids and gases? * a. Mass of the substance b. Movement of molecules C. Particle size of the substance d. Energy exchanges between atoms 4. Ronald and Earl conducted an activity on how it feels when they push a plunger of the syringe with air and water in it. They found out that they would push the plunger of the syringe with air but could not with water. Which of the following supports the observation? * a. Water can be compressed just like air. b. Water can be compressed just like solids C. Air can be compressed while water cannot d. Both water and air cannot be compressed
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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