Which statement describes the transfer of heat energy that occurs when an ice cube is added to an insulated container with 100 milliliters of water at 25 degrees celsius?
1. both ice cubes and the water will lose heat energy
2. both the ice cubes and water gain heat and energy
3. the ice cube's gain heat energy and the water loses heat energy
4. the ice cube loses heat energy and the water gains heat energy

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.  

the answer is 1 i believe

explanation:

the answer is c

tell me if wrong