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bearhunter [10]
3 years ago
13

What does expand mean in science

Chemistry
2 answers:
german3 years ago
8 0
First answer is correct it does mean spread out
borishaifa [10]3 years ago
5 0
Spread out, usually in every direction.
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Balanced equation for the combination of magnesium and oxygen to form magnesium oxide
Digiron [165]

2Mg(s) + O2(g) --> 2MgO(s)

8 0
3 years ago
How do an alligator’s eyes help it survive?
scoray [572]
An alligator has has an extra eyelid that protects there eyes underwater. It's basically their own built-in goggles.
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3 years ago
Which of the following illustrates the conservation of matter? A. SnO2 + H2 --> Sn + 2 H2O B. 2 C + O2 --> CO2 C. KOH + HB
olga2289 [7]

C. KOH + HBr → KBr + H₂O

Explanation:

The two equations above illustrates the conservation of matter. The law of conservation of matters states that

               "in a chemical reaction, matter is neither created nor destroyed but transformed from one form to another".

By this law, we understand that the amount of a particular matter we are starting with should be the one we end with.

    KOH + HBr → KBr + H₂O

Conserving                          Product                          Reactants

     K                                         1                                           1

     O                                         1                                           1

      H                                         2                                          2

We can see that the amount on both sides are the same.

Learn more:

Conservation of matter brainly.com/question/2190120

#learnwithBrainly

8 0
3 years ago
Methane is a colorless, odorless gas. it oxidizes in air and has a boiling point of -161°
Katyanochek1 [597]

Answer: oxidizes in air

Explanation: Chemical property is the property which deals with change in chemical composition of the substance.

Physical change is the property which deals with change in physical state of the substance.

CH_4+2O_2\rightarrow CO_2+2H_2O

The above equation represents the oxidation of methane to form carbon dioxide and water. Thus the chemical composition has changed and is a chemical property.

Color and odor only involves no change in chemical composition.






5 0
3 years ago
Read 2 more answers
The smallest particle to retain the properties of an element is an?
svlad2 [7]
I’m so sorry explain it more
4 0
3 years ago
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