Chemistry Semester 1 Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are important for determining how an element reacts chemically.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number, which shows periodic trends in properties.

Front

What does it mean for a substance to have a different density?

Back

Density is the mass per unit volume of a substance. Different densities indicate that substances have different compositions or structures.

Front

How do you convert Celsius to Kelvin?

Back

To convert Celsius to Kelvin, add 273.15 to the Celsius temperature.

Front

What is the symbol for Magnesium?

Back

The symbol for Magnesium is Mg.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.