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adoni [48]
3 years ago
8

When two substances are mixed and light is produced is it a chemical or physical change?

Chemistry
2 answers:
ziro4ka [17]3 years ago
8 0
Chemical because its mixing two chemicals which are substances
ASHA 777 [7]3 years ago
7 0
It is a chemical change. Because energy was released and when a chemical change happens bonds are broken of formed.
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"sodium hydroxide is a strong base because it absorbs more" ____________ ions than weak bases.
Hunter-Best [27]
The answer is: absorbs more H (protons) ions.

- The Sodium hydroxide NaOH ionizes completely when dissolved in water.
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Explanation:

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2 years ago
Which of the following is ONE of the signs of a chemical change
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3 years ago
What is the mass, in grams, of 9.01 x 1024 molecules of methanol (CH, OH) ?
Zina [86]

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480.6 g

Explanation:

Given data:

Number of molecules of methanol = 9.01 ×10²⁴

Mass in gram = ?

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The number 6.022 × 10²³ is called Avogadro number.

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3 0
3 years ago
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