Answer: A - it is changing into a new substance
the other answers are just physical changes
T is the time it takes for one complete oscillation , it is measured in seconds. All waves, including sound waves and electromagnetic waves , follow this equation. For example, a wave with a time period of 2 seconds has a frequency of 1 ÷ 2 = 0.5 Hz. A sound wave has a time period of 0.0001 seconds.
Answer:
Decomposition
Explanation:
H2CO3 Breaks down to H2O and CO2
what are we doing in that question
Explanation:
I dunno know
There are 118 known elements
