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6.5 f - Lesson 5
Chemical Reactions
Question | Answer |
---|---|
Chemical equations can be used to model chemical changes. | True |
Matter is conserved because atoms are conserved in _____ processes. | Chemical and physical |
What is the product in the chemical equation below? C + O2 → CO2 | CO2 |
Chemical equations illustrate how atoms of elements _____ in a chemical reaction. | rearrange |
How many elements are present in the chemical equation for iron oxide? 4Fe + 3O2 + 6H2O → 4Fe(OH)3 | 3 |
Chemical equations tell us how long a chemical reaction will take. | False |
Chemical equations are used to illustrate how elements become rearranged in a chemical _____. | reaction |
A balanced chemical equation has the same number of atoms of each element on each side of the equation. | True |
How many atoms are in one molecule of carbon dioxide? CO2 | 3 |