The Atom and Periodic Table

Which subatomic particle is located in the nucleus of an atom and has a positive charge?

• Protons

• Electrons

• Neutrons

• Valence Electrons

What is the atomic number of an element equal to?

• Number of protons

• Number of neutrons

• Number of energy levels

• Number of valence electrons

Which value most likely determines the atom's identity?

• 956

• 465

• 491

• 21

Tags

NGSS.MS-PS1-1

Hydrogen would have chemical properties most like -

• Sodium (Na)

• Helium (He)

• Chlorine (Cl)

• Calcium (Ca)

Identify the elements that share the same physical and chemical properties of the element shown.

Hint: They belong in the same family.

Where are valence electrons located?

• In the nucleus

• In the electron cloud

• In the inner energy levels

• In the outermost energy level

Which group of elements has 3 valence electrons?

• Group 1

• Group 2

• Group 13

• Group 18

Which category of elements is located on the left side of the Periodic Table?

• Metals

• Nonmetals

• Metalloids

• Transition Metals

In this model, which particle is responsible for the reactivity of the element?

• X

• Y

• Z

• W

Tags

NGSS.MS-PS1-1

Identify the metalloids and write the elements' name down.

Tags

NGSS.MS-PS1-1