Group (1) is alkali metal and its elements have 1 valence electron. Oxygen (O) valency is 2, and together they can form compounds with the general formula X2O.
Therefore, (1) Group 1 is the correct answer.
Hope this helps~
Answer:
10°C
Explanation:
Here the problem deals with the relationship between the amount of heat lost and the temperature change of a body.
From the relationship below:
H = m C Δt
H is the quantity of heat
m is the mass
C is the specific heat
Δt is the change in heat
We can see that the quantity of heat is directly proportional to the Δt, so as more heat changes occur, so also is the value of Δt .
Answer:
Chemical Compound
Explanation:
I'm not sure why but I know it's chemical. Hope this helps!
I want to say Neutrons.
Hope this helps!
Comets are objects in the space that is composed mainly of dust and ice. While approaching the sun, a tail grows. Comets have nucleus which represents the hard rock object. As it nears the sun, it heats up the comet causing it to vaporize. Meteors, on the other hand, are what we call "shooting stars". They are interplanetary dusts that burn up as it approaches the Earth's atmosphere.
