Chemistry Fall review-Classwork

Front

What is the formula of tetraphosphorus heptasulfide?

Back

P₄S₇

Front

What is the electron configuration of arsenic (atomic number 33)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

Front

What type of reaction is C₃H₆ + 9O₂ → 6CO₂ + 6H₂O?

Back

Combustion

Front

How does atomic radius change across a period in the periodic table?

Back

Atomic radius tends to decrease.

Front

Which electron dot formula shows an ionic bond?

Back

H

Front

What is the definition of an ionic bond?

Back

An ionic bond is a chemical bond formed through the transfer of electrons from one atom to another, resulting in the formation of charged ions.

Front

What is the definition of a covalent bond?

Back

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in the nucleus of an atom and determines the element's identity.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation.