The center of the atom is called the _____.

The _____ and _____ are found in the nucleus.

_____ have a positive charge.

_____ have a negative charge.

The _____ surrounds the nucleus and contains the electrons.

The neutrons have a _____ charge

The _____ move around and jump from one energy level to another.

Overtime, the atom has changed

If an atom has 6 protons, how many electrons does it have?

If an atom has 2 protons and a mass of 4. How many neutrons does it have?

The amount of time it takes for an element to reduce its mass by half is called _____.

An element that has the same number of protons, but different number of neutrons.

If an element has 8 electrons, how many protons does it have?

If an atomic mass is 15.991. What does it round to?

If an element has an atomic number of 10, how many protons does it have?

_____ is when an element gives off energy (radiation).

Which of the following is not an example of radioactive decay?

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