Question

science starter
use the word bank to complete the paragraph. type your answers in the boxes provided.
the periodic table is an organization system for all the different elements. the smallest part of an element that still has the properties of the element is an

. it is made up of three main subatomic particles. there are negatively charged

that can be found in a cloud around the atom.
inside the atom is a nucleus. it contains positively charged

as well as

which have no charge. when we look at different elements, we can identify them by the number of protons, or the

of the element.
protons
atomic number
neutrons
electrons
atoms

Explanation:

Step1: First blank (element's smallest part)

The smallest part of an element that retains its properties is an atom. So the first blank (after "The smallest part of an element that still has the properties of the element is an") is "atom".

Step2: Second blank (negatively charged, cloud around atom)

Negatively charged particles in a cloud around the atom are electrons. So the blank "There are negatively charged [blank] that can be found in a cloud around the atom" is "electrons".

Step3: Third blank (nucleus contains positively charged and...)

Inside the nucleus, positively charged particles are protons, and neutral particles are neutrons. The blank "Inside the atom is a nucleus. It contains positively charged [blank] as well as [blank] which have no charge" – first part of nucleus fill: "protons", second part: "neutrons".

Step4: Fourth blank (identify element by number of protons/...)

The number of protons (or atomic number) identifies the element. The blank "When we look at different elements, we can identify them by the number of protons, or the [blank] of the element" is "atomic number".

Answer:

First blank: atom
Second blank: electrons
Third blank (nucleus - positive): protons
Third blank (nucleus - no charge): neutrons
Fourth blank: atomic number

(Note: Filling the blanks in order with these terms: atom, electrons, protons, neutrons, atomic number)