Chemistry
High School (9–10)
General
Chemical Reactions › Chemical EquationsChemical Reactions › Types of Chemical ReactionsChemical Reactions › Energy Changes and CorrosionChapter 5Contains Standard contentChemical Reactions and Equations
An iron gate turns brown, milk turns sour, and a match bursts into flame. In each case, new substances are made. In this chapter we learn how to see a chemical reaction, how to write it as an equation, and how to balance the equation. Then we meet the main types of reactions, we see which ones give out heat, we find out why iron rusts, and we calculate how much of a substance a reaction makes. Python helps us to balance and to count.
Part of Chemistry · High School (9–10) (chapter 5)
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Chemical Changes and Equations
When you burn a candle, or leave a cut apple in the air, a chemical change takes place. In this course we learn how to tell that a reaction has taken place, how to write it as an equation, and how to balance the equation.
Types of Chemical Reactions
Most reactions follow one of a few patterns. Substances join, split up, change places, or swap partners. In this course we learn the patterns, and we learn what oxidation and reduction mean.