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grin007 [14]
3 years ago
14

True or false: Observing a physical property of a substance will change the substances' identity I NEEED HELLLPPPPP NOOOWWWW !!!

! PLEASEEEEE
Chemistry
1 answer:
andrew11 [14]3 years ago
8 0

Answer:

false

Explanation:

a physical property can be observed and stay the same but a chemical property can't

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Methane undergoes combustion. Which products form?
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An alloy of bronze is manufactured by melting 51.2 g of copper with 6.84 g of tin. What is the percent copper in the bronze?
Harlamova29_29 [7]

Answer:

Percentage of copper = 88%

Explanation:

Given data:

Mass of copper = 51.2 g

Mass of tin = 6.84 g

Percentage of copper = ?

Solution:

Formula:

Percentage of copper = mass of copper / total mass × 100

Now we will determine the total mass:

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