Honors Chemistry Midterm 2024

Front

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

Back

C₆H₁₂O₆

Front

How many protons, neutrons and electrons will the following ion have? 16 protons, 18 electrons, 18 neutrons

Back

16 protons, 18 electrons, 18 neutrons

Front

Convert 50 km to cm.

Back

5000000 cm, 5e6 cm, 5.0E6 cm

Front

What is the formula for magnesium chloride?

Back

MgCl₂

Front

What did Henry Moseley contribute to the modern periodic table?

Back

Providing a basis for ordering elements in the periodic table based on atomic number.

Front

Define empirical formula.

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

What is a molecular formula?

Back

A chemical formula that shows the number and types of atoms in a molecule.

Front

What is the significance of atomic number in the periodic table?

Back

It determines the position of an element in the periodic table and its chemical properties.

Front

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

Back

Subtract the atomic number from the atomic mass.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

They are equal in number, resulting in no overall charge.