Match the following items. match the items in the left column to the items in the right column. 1 . vibrate slowly in fixed positions 2 . condensation vibrate and rotate 3 . occurs at phase equilibrium 4 . required for evaporation 5 . condensation 6 . vibrate, rotate, and translate 7 . caused by collisions with container walls 8 . measure of average kinetic energy 9 . the intermingling of one substance within another 10 . to a liquid solid, liquid, gas 11 . determined by mass and speeda. high speedsb. evaporationc. pressured. diffusione. solid particlesf. kinetic energyg. order of increasing kinetic energy h. liquid particlesi. gas particlesj. gas changing h. temperature

1E, 6I, 7C, 8K, 9D, 10G, 4A, 5J, 3B, 2H, 11F

Explanation:

Coloumn A Coloumn B

1. E

2. H

3. B

4. A

5. J

6. I

7. C

8. K

9. D

10. G

11. F

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.