# data[].attributes.body
1. The nucleus contains neutrons within it.
2. A neutron has a mass nearly equal to that of a proton and carries no electric charge.

# data[].attributes.body
1. Atoms consists of mostly empty space through which electrons move.
2. An atom's positive charge and mass can be found in the center of the atom, a dense area called the nucleus.
3. The positive charge of a nucleus balances the negative charge of electrons.

# data[].attributes.body
1. The charge of an electron is 1.592 × 10⁻¹⁹.
2. The mass of an electron is 1/1840 of a hydrogen atom.

# data[].attributes.body
1. The atom has a spherical shape which is composed of a uniformly distributed positive charge.
2. Individual negative charged electrons can be found inside of the atom.

# data[].attributes.body
1. Particles in radiation have a negative charge.
2. The mass of a charged particle is less than that of a hydrogen atom, the lightest known atom.
3. Atoms can be made divisible into smaller subatomic particles.

# data[].attributes.body
1. Cathode rays were streams of charged particles which carried a negative charge.
2. Radiation's negative particles can be found in all types of matter. These particles are known as electrons.

# data[].attributes.body
1. Matter is composed of extremely small particles called atoms.
2. Atoms are indivisible and indestructible.
3. Atoms of a given element are identical in size, mass, and chemical properties.
4. Atoms of a specific element are different from those of another element.
5. Different atoms combine in simple whole-number ratios to form compounds.
6. In a chemical reaction, atoms are combined or rearranged to form different substances.

# data[].attributes.body
1. Everything is matter and empty space cannot exist.
2. Matter is made of earth, fire, air, and water.
3. Matter can be broken into infinitely small pieces.

# data[].attributes.body
1. Matter composed of atoms that move through empty space.
2. Atoms are solid, homogeneous, indestructible, and indivisible.
3. Different kinds of atoms have different sizes & shapes.
4. Size, shape, and movement of atoms determine the properties of matter.