Question

Chemistry questions help

Answer 1

1. Chemical reactions ______.
- occur in only living organisms
- create and destroy atoms
-only occur outside living organisms
-produce new substances

2. What does the symbol "triangle" in a chemical equation mean?
-heat is supplied to the reaction
-catalyst is needed
-yields
-precipitates

3. A skeleton equation does not show which of the following?
- the correct formulas of the reactants and products
-the reactants on the left, the products on the right
-an arrow connecting the reactants to the products
-the relative amounts of reactants and products

4. Skipping #4

5. What are the coefficients that will balance the skeleton equation below?
AlCl3+NaOH--->AL(OH)3+NaCl

Answer 2

1. A or D not sure :/
2. A
3. B
5. AlCl3 + 3NaOH → Al(OH)3 + 3NaCl

Answer 3

Edit*
#1 is D

Answer 4

1. D because chemical reaction make new substances. Like fire turns wood into ashes.
2. A because the triangle symbol means to apply heat.
3. D. because you don't see the relative amounts of reactants and products
4. The double arrow means it is reversible.--->
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5. 1,3,1,3