Chemistry Semester 1 Review

Front

What is the atomic number of Carbon?

Back

6

Front

What is the electron configuration of an oxygen atom?

Back

1s² 2s² 2p⁴

Front

Define a pure substance.

Back

A material with a fixed composition and distinct properties.

Front

What is a chemical property?

Back

A characteristic of a substance that may be observed when it participates in a chemical reaction.

Front

What is the mass of an electron compared to protons and neutrons?

Back

Not significant to the overall mass of the atom.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is the difference between a physical property and a chemical property?

Back

A physical property can be observed without changing the substance, while a chemical property can only be observed during a chemical reaction.

Front

What does the periodic table represent?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is the significance of the atomic mass?

Back

It represents the average mass of an element's isotopes.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.