Exploring the Periodic Table

What is the difference between an element and a compound?

• An element can be made of multiple types of atoms, while a compound is made of only one type.

• Elements can be broken down into simpler substances, whereas compounds cannot.

• An element consists of one type of atom, while a compound consists of two or more different types of atoms chemically bonded.

• Compounds are always gases, while elements can be solids, liquids, or gases.

Define atomic structure and its components.

• Electrons are the heaviest particles in an atom.

• Neutrons are negatively charged particles.

• Atoms are made of molecules and compounds.

• Atomic structure consists of protons, neutrons, and electrons.

What trend is observed in atomic size across a period?

• Atomic size fluctuates randomly across a period.

• Atomic size decreases across a period.

• Atomic size remains constant across a period.

• Atomic size increases across a period.

Explain the concept of ionic and covalent bonds.

• Ionic bonds involve electron transfer and attraction between ions, while covalent bonds involve electron sharing between atoms.

• Ionic bonds are formed by sharing electrons equally between atoms.

• Ionic bonds are weaker than covalent bonds and do not involve any charge.

• Covalent bonds involve the complete transfer of protons between atoms.

List three properties of metals.

• Brittleness

• Insolubility in water

• High electrical conductivity, malleability, ductility

• Low thermal conductivity

What are metalloids and where are they located on the periodic table?

• Metalloids are elements located along the zig-zag line on the periodic table, between metals and nonmetals.

• Metalloids are found only in the d-block of the periodic table.

• Metalloids are elements that are completely non-metallic in nature.

• Metalloids are located in the far right corner of the periodic table.

How does reactivity change as you move down a group in the periodic table?

• Reactivity increases for metals and decreases for nonmetals as you move down a group.

• Reactivity is highest at the top of a group for all elements.

• Reactivity decreases for metals and increases for nonmetals.

• Reactivity remains constant for both metals and nonmetals.

What is the electronic configuration of oxygen?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁶

• 1s² 2s² 2p⁴

• 1s² 2s² 2p³

How many periods are there in the periodic table?

• 10

• 7

• 5

• 12

What are groups in the periodic table?

• Groups are sections that contain only metals in the periodic table.

• Groups are elements that have the same atomic number.

• Groups are horizontal rows in the periodic table.

• Groups are vertical columns in the periodic table that contain elements with similar chemical properties.