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svp [43]
1 year ago
10

Is using matches to light a candle physical or chemical change ?

Chemistry
2 answers:
AveGali [126]1 year ago
6 0
Chemical change because the wax particles are changing
daser333 [38]1 year ago
3 0

Answer:

It's a chemical change.

Explanation:

The process of burning (as opposed to evaporating) is a chemical reaction, a chemical change. The wax molecules are undergoing a chemical change; they are changing into different molecules by reacting with a substance in the air.

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¿A que se refiere la amplitud de una onda sinusoidal?
kozerog [31]
Amplitude is the distance between the center line of the function and the top or bottom of the function, and the period is the distance between two peaks of the graph, or the distance it takes for the entire graph to repeat. Using this equation: Amplitude =APeriod =2πBHorizontal shift to the left =CVertical shift =D.


The amplitude of the sine and cosine functions is the vertical distance between the sinusoidal axis and the maximum or minimum value of the function. In relation to sound waves, amplitude is a measure of how loud something is.

7 0
3 years ago
A weather balloon has a volume of 1750 L at 103 kPa. The balloon is then released to the atmosphere. What is the pressure if at
AnnyKZ [126]

Answer:

35.0 kPa

Explanation:

As pressure decreases, the volume of a gas increases at a given temperature., so since the balloon got bigger, the new pressure must be less than 103kPa

Assuming the temperature does not change, use Boyles Law

P1V1 = P2V2

(103kPa) (1750L) = P2 (5150L)

P2 = (103)(1750) / 5150

8 0
3 years ago
Define fermentation and how alcohol is produced. Describe distillation, the process used in forming " spirits".
Dimas [21]

Answer:

Fermentation is where all alcohol is created, distillation is where the alcohol is separated and removed. In order for fermentation to occur, two things are needed: a raw material in liquid form that contains sugar, followed by the addition of yeast.

8 0
3 years ago
Elements whose names end with âium are usually metals; sodium is one example. Identify a nonmetal whose name also ends with âium
Makovka662 [10]

Answer: Helium (He) and Selenium (Se) both are non metals ends with ium sound

Explanation:

He is a inert gas and Se belongs to oxygen family (VI A group)

8 0
3 years ago
Someone please help?!?
ss7ja [257]

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Explanation:

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