Chemistry Fall Exam 2024

Front

Who developed the planetary model of the atom?

Back

Niels Bohr

Front

What is the molar mass of fluorine (F2)?

Back

38.00 g/mol

Front

When comparing 1 mol of O2 with 1 mol of CO, what must be the same?

Back

The number of molecules

Front

What tool is most likely used to measure approximately 300 mL of water?

Back

Beaker

Front

Avogadro’s number was calculated using the number of atoms in what mass of carbon-12?

Back

12.00 g of carbon-12

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Tags

NGSS.HS-PS1-7

Front

What is Avogadro's number?

Back

6.022 x 10^23, the number of particles in one mole of a substance.

Front

What is the significance of the planetary model of the atom?

Back

It describes electrons orbiting the nucleus in defined paths, similar to planets around the sun.

Front

How do you calculate the molar mass of a compound?

Back

Add the molar masses of all the atoms in the compound's formula.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Tags

NGSS.MS-PS1-1