1. MATCHING OF WORDS OR PHRASES 1. Alloys a) example of a derived unit 2. 2H b) allotropes of oxygen 3. Mixtures c) two or more different elements bonded 4. Smallest unit of a compound d) centi 5. Compound, e) a qualitative statement f) kilo 8) a unit of measurement 6. 02 and 03 7. Smallest unit of a compound 8. One thousandth of a unit h) a quantitative statement 9. Teaspoon ) components separable by physical means 10. H2 i) homogeneous mixtures of metals 11. Density k) milli 12. A person is tall Da molecule of hydrogen 13. one thousand of something m) atom 14. one hundredth n) two atoms of hydrogen 15. Somebody weighs 150 pounds o) molecule
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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