1. Aluminum + hydrochloric acid → aluminum chloride + hydrogen AlCl3 ノ8H 2. Chromium + oxygen → chromium(lII) oxide 3. Potassium + water potassium hydroxide + hydrogen 4. Arsenic(III) oxide + hydrochloric acid → arsenic(III) chloride + water 5. Sodium bicarbonate + nitric acid → sodium nitrate + water + carbon dioxi 6. Ammonium dichromate → nitrogen + chromium(III) oxide + water Part 2. Rewrite the following word reactions into balanced chemical equation correct formulas before balancing the 1. Aluminum + hydrochloric acid aluminum chloride + hydrogen AL2 Hor AlC 3. 2. Chromium + oxygen chromium(III) oxide 3. Potassium + water potassium hydroxide + hydrogen 4. Arsenic(III) oxide + hydrochloric acid → arsenic(III) chloride + wate 5. Sodium bicarbonate + nitric acid → sodium nitrate +water + carb 6. Ammonium dichromate → nitrogen + chromium(III) oxide + wate

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.