Chemistry Semester 1 Review

Front

What is the formula to convert Kelvin to Celsius?

Back

Celsius = Kelvin - 273.15

Front

What are significant digits?

Back

Significant digits are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and any trailing zeros in the decimal portion.

Front

How do covalent bonds form?

Back

Covalent bonds form by sharing valence electrons between atoms.

Front

What is the chemical name for Ca2CO3?

Back

Calcium carbonate.

Front

Which element has similar chemical properties as sodium but has 7 energy levels?

Back

Francium (Fr).

Front

What is the average temperature of the sun in Kelvin?

Back

5776 K.

Front

What is the significance of scientific notation in measurements?

Back

Scientific notation allows scientists to express very large or very small numbers in a compact form, making it easier to read and compare.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the periodic table?

Back

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

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are the outermost electrons of an atom and are involved in forming bonds with other atoms.