Chemical Reactions

What is the smallest unit of an element that retains the properties of that element?

• Molecule

• Atom

• Compound

• Proton

Which of the following particles is found in the nucleus of an atom?

• Electron

• Neutron

• Proton

• Isotope

What type of elements are typically found on the left side of the periodic table and are good conductors of heat and electricity?

• Nonmetals

• Metalloids

• Alkali metals

• Metals

Which of the following elements is a nonmetal?

• Sodium

• Oxygen

• Iron

• Copper

Which element is located in the same period as oxygen on the periodic table?

• Nitrogen

• Fluorine

• Sodium

• Carbon

Which of the following is a property of metals?

• Low conductivity

• Brittle

• Malleability

• Dull appearance

Which of the following particles is not found in the nucleus of an atom?

• Electron

• Neutron

• Proton

• Isotope

Which of the following is a property of nonmetals?

• High conductivity

• Brittleness

• Malleability

• Shiny appearance

How are the 3 elements in the picture organized on the periodic table?

• Niobium and cobalt have the same energy levels.

• Cobalt and scandium have the same energy levels.

• Cobalt and scandium have the same characteristics.

• Niobium and cobalt have the same characteristics.

Metalloids are on the:

• Left side

• Right Side

• Stairstep