Chemistry Concepts Quiz

What is the smallest particle of an element that can exist?

• molecule

• atom

• neutron

• proton

Which group of the periodic table contains the most reactive metals?

• Group 7 (halogens)

• Group 1 (alkali metals)

• Group 18 (noble gases)

• Group 2 (alkaline earth metals)

What is the general trend in melting points across a period in the periodic table?

• Melting points fluctuate randomly across the period

• Melting points increase up to the middle of the period and then decrease.

• Melting points decrease consistently across the period

• Melting points remain constant throughout the period

What type of bond is formed when electrons are shared between atoms?

• Ionic bond

• Metallic bond

• Hydrogen bond

• Covalent bond

What is the structure of diamond?

• Tetrahedral

• Cubic

• Octahedral

• Dodecahedral

Fill in the blank: Ionic bonds are formed between a _______ and an _______ atom.

• metal, non-metal

• metal, metal

• non-metal, metal

• non-metal, non-metal

What is the name given to the attraction between a positive metal ion and delocalized electrons?

• metallic bonding

• hydrogen bonding

• ionic bonding

• covalent bonding

Explain the difference between a covalent bond and an ionic bond.

• Covalent bonds involve electron transfer, while ionic bonds involve electron sharing.

• Covalent bonds involve electron sharing, while ionic bonds involve electron transfer.

• Covalent bonds are formed between metals and nonmetals, while ionic bonds are formed between two nonmetals.

• Covalent bonds are stronger than ionic bonds.

How does the structure of graphite differ from diamond?

• Graphite has a three-dimensional network structure like diamond.

• Graphite has a single-layer structure compared to diamond.

• Graphite has a layered structure with weak forces between layers, while diamond has a three-dimensional network structure.

• Graphite has a cubic structure similar to diamond.