Question

Question was provided via image upload.

Explanation:

Step1: Fill in atom structure blanks

1. Atoms are made up of mostly empty space
2. Charge of a proton: $\boldsymbol{1+}$
3. Charge of a neutron: $\boldsymbol{0}$
4. Charge of an electron: $\boldsymbol{1-}$
5. The nucleus contains most of an atom's mass
6. All atoms contain protons, neutrons, and electrons. However, different elements have different numbers of these particles.

Step2: Verify table completeness

The provided table is already fully completed correctly:

Particle	Symbol	Charge	Location	Relative mass
Proton	$\text{p}$	$1+$	nucleus	$1$
Neutron	$\text{n}$	$0$	nucleus	$1$

Answer:

1. space
2. $\boldsymbol{1+}$
3. $\boldsymbol{0}$
4. $\boldsymbol{1-}$
5. nucleus; mass
6. protons, neutrons, and electrons; different elements; numbers

The provided table is already correctly filled out as shown above.