The word atom<span> is derived from the Greek </span><span> 'atomos' - </span><span>“indivisible.”
But the word 'atom' itself just means the smallest particle, not necessarily invisible.
</span><span>
</span>
As the size of a star increases, luminosity increases. If you think about it, a larger star has more surface area. That increased surface area allows more light and energy to be given off. Temperature also affects a star's luminosity.
Answer:
Q = 5555.6J
Explanation:
Mass of glass piece, m = 453g
initial temperature = 25.7°C
temperature to be attained = 40.3°C
⇒change in temperature, Δt = 40.3 - 25.7 = 14.6°C
specific heat of glass, s = 0.840J/g°C
Heat absorbed, Q = msΔt
⇒Q = 453×0.840×14.6 = 5555.592J
⇒<u>Q = 5555.6J</u> (rounded to the nearest tenth)
To become positively charged it loses electrons.
To become negatively charged it gains electrons.
Electrons have a negative charge.
Hope that helps!
It would be potassium chloride or kcl