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With all
1.
check all the statements that are correct. conservation of mass means:
1.matter can be destroyed in a chemical reaction
2.we can start a reaction with different types of elements than we have at the end of the reaction.
3.we must start and end with the same amounts of matter
4.matter cannot be created
question 2
select all of the signs of a chemical reaction
1.a solid is formed
2.the change can be easily undone
3.the state of matter changes
4.a gas is released
5.a temperature change happens
6.a color change happens
question 3
a chemical
1.creates one or more new substances
2.happens in the water cycle
3.is only a physical change
4.is when something changes the state of matter
question 4
changing from one state of matter to another is a
1.physical change
2.chemical reaction
3.chemical change
4.optical illusion
question 5
during a chemical
1.the substances change by rearranging the atoms and elements
2.matter can be destroyed
3.new matter is created
4.energy is created
!
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The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide
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With all
1.
check all the statements that are correct. conservation of mass me...
1.
check all the statements that are correct. conservation of mass me...
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