Observe the substances in the test tubes for 15 minutes. In the table, describe what’s happening in each test tube, including any evidence of a chemical reaction. Evidence of chemical reactions can include change in color, change in smell, change in temperature, formation of a solid, or formation of bubbles. If there’s no observable change in a test tube, write “no reaction.” Test Tube Chemicals Reaction 1 iron and copper(II) sulfate 2 copper and hydrochloric acid 3 zinc and iron(III) nitrate 4 zinc and magnesium sulfate 5 zinc and hydrochloric acid 6 iron and hydrochloric acid
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.
Observe the substances in the test tubes for 15 minutes. In the table, describe what’s happening in each test tube, including any evidence of a chemical reaction. Evidence of
| Test Tube | Chemicals | Reaction |
| 1 | iron and copper(II) sulfate | |
| 2 | copper and hydrochloric acid | |
| 3 | zinc and iron(III) nitrate | |
| 4 | zinc and magnesium sulfate | |
| 5 | zinc and hydrochloric acid | |
| 6 | iron and hydrochloric acid |
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