For each of the following definitions give one word or term:
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A change that can be seen or felt, where the particles
involved are not broken up in any way
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The formation of new substances in a chemical reaction
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A reaction where a new product is formed from elements or
smaller compounds
Solution not yet available
Explain how a chemical change differs from a physical change.
Solution not yet available
Complete the following table by saying whether each of the descriptions is an
example of a physical or chemical change:
Solution not yet available
For each of the following reactions, say whether it is an example of a
synthesis or decomposition reaction:
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\((\text{NH}_{4})_{2}\text{CO}_{3} \rightarrow \text{NH}_{3}
+ \text{CO}_{2} + \text{H}_{2}\text{O}\)
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\(\text{N}_{2}\text{(g)} + 3\text{H}_{2}\text{(g)}
\rightarrow 2\text{NH}_{3}\text{(g)}\)
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\(\text{CaCO}_{3} \rightarrow \text{CaO} + \text{CO}_{2}\)
Solution not yet available
For the following equation: \(\text{CaCO}_{3}\text{(s)} \rightarrow \text{CaO
(s)} + \text{CO}_{2}\text{(g)}\) show that the law of conservation of
mass applies. Draw sub-microscopic diagrams to represent this reaction.
Solution not yet available