What’s the answers? ⭐️⭐️ A small trip of treated paper used in chemistry,
which turns red in an acid & blue in a base.

A machine for breaking up soil.

A chemical compound that reacts with acid.

An area where people live near one another.

A substance used in or produced by a chemical
process.

A group of people living together in one place.

A chemical substance that dissolves in water.

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

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the answer is c.the valence of the atoms combine .