How to make a brick shrink, grow, and go transparent over time?

1. The brick with the ParticleEmitter: This is quite simple really. All you need to do to create a ParticleEmitter is insert a ParticleEmitter object in a part. After that, it's just playing around with the properties to find what you want.

2. Making the sphere grow and shrink: Again, extremely simple. To do this, you'd use a loop. There are three kinds, for, while, and repeat. The one that you should probably use is for, because you can loop it for a certain amount of time. To get a sphere to shrink and grow, we'd do something like this:

for i = 1, 10 do
	sphere.Size  = sphere.Size + Vector3.new(1, 1, 1)
	wait()
end
for i = 1, 10 do
	sphere.Size = sphere.Size - Vector3.new(1, 1, 1)
end

1. Making the sphere change in transparency: This is basically the exact same thing as making a block grow, you'd use a loop. Whenever you want to show a gradual change in something without repeating your code, loop.

for i = 1, 5 do
	sphere.Transparency = sphere.Transparency + 0.1
	wait()
end
for i = 1, 5 do
	sphere.Transparency = sphere.Transparency - 0.1
end

If you have any other questions, feel free to message me, and don't forget to accept the answer if it helped you!