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anygoal [31]
3 years ago
11

What is the most important thing you need to remember for physical change?

Chemistry
1 answer:
Verizon [17]3 years ago
5 0
The most important thing you need to know about physical change, is that a physical change does not change the identity, or chemical make up of an object or substance. For example, if you were to have an orange, and you painted it blue, it is still an orange, whereas if you burned the orange, it is no longer an orange. It would be soot/ash. 
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Are weathering and erosion two different names for the same process? Explain why or why not.PLEASE HELP!
Katyanochek1 [597]

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How do you know if a reaction is endothermic?
Vikentia [17]
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6 0
3 years ago
NEED HELP NOW!!!!!!!
Afina-wow [57]

Answer:

fission

Explanation:

hope that helps

3 0
3 years ago
Read 2 more answers
What is the mass, in grams, of a sample of 6.98 × 1024 atoms of magnesium (Mg)?
monitta
N=6.98*10²⁴
Nₐ=6.022*10²³ mol⁻¹

n(Mg)=N/Nₐ

m(Mg)=n(Mg)M(Mg)=M(Mg)N/Nₐ

m(Mg)=24.3g/mol*6.98*10²⁴/(6.022*10²³mol⁻¹)=281.7 g
5 0
3 years ago
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