Physical change
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Is a change in matter that produces one or more substances
Chemical change
Physical change
Chemical reaction
Answers: 2
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Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
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What are the first three quantum numbers for the electrons located in subshell 2s?
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Stage in which a typical star has completely stopped fusion
Answers: 1
Is a change in matter that produces one or more substances
Chemical change
Physical change
Physical change
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