Science Quiz

What particle has a positive charge and is found in the nucleus?

• Electron

• Neutron

• Proton

• Positron

Tags

NGSS.HS-PS1-8

What determines the identity of an element?

• Number of neutrons

• Number of protons

• Number of electrons

• Atomic mass

Which trend decreases across a period from left to right?

• Atomic radius

• Ionization energy

• Electronegativity

• None of the above

Noble gases are found in which group of the periodic table?

• Group 1

• Group 2

• Group 17

• Group 18

Ionic bonds occur between:

• Two nonmetals

• Two metals

• A metal and a nonmetal

• Metalloids

Covalent bonds involve:

• Transfer of electrons

• Sharing of electrons

• Loss of protons

• Gain of neutrons

Tags

NGSS.HS-PS1-1

Which of the following is a property of ionic compounds?

• Low melting points

• High melting points

• Poor electrical conductivity

• Malleability

What model describes the "sea of electrons" in metals?

• Covalent bond model

• Ionic bond model

• Metallic bond model

• Polar bond model

According to Dalton's atomic theory, matter consists of:

• Divisible particles called atoms

• Indivisible particles called atoms

• Energy waves

• Continuous matter without particles

Thomson discovered that cathode rays:

• Emanate from the positive electrode

• Consist of positively charged particles

• Are deflected by magnetic fields, proving they have charge

• Do not have a charge

Tags

NGSS.HS-PS4-3