Structure of the Atom and the 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

How can you calculate the number of neutrons in an atom?

• Subtract atomic number from mass number

• Add atomic number and mass number

• Multiply atomic number by mass number

• Subtract mass from atomic number

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

What property of matter measures a substance's ability to conduct electricity and heat?

• Luster

• Conductivity

• Malleability

• Ductility

A new element, Alamonium, is found and below are some of its properties.

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)

Tags

NGSS.MS-PS1-1

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

• X

• Y

• Z

• W

Tags

NGSS.MS-PS1-1