Honors Chemistry Final Review Part 2

CO is the symbol for Carbon Monoxide.  This is a(n) _________.

• Element

• Compound

• Mixture

• Atom

Tags

NGSS.MS-PS1-1

States that, regardless of the amount, a compound is always composed of the same elements in the same proportion by mass

• Law of Definite Proportions

• Law of Multiple Proportions

• Law of Conservation of Mass

• Periodic Table

How many carbon atoms (C) are in a CO₂ molecule?

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

What mass of calcium metal contains the same number of atoms as 24.3 g of magnesium?

• 21.0 g

• 40.1 g

• 80.2 g

• None of the above

Tags

NGSS.HS-PS1-7

This substance consists of two or more elements in a fixed mass ratio.

• Element

• Compound

• Mixture

• Pure Substance

This substance cannot be broken down by physical or chemical means.

• Element

• Compound

• Mixture

• Pure Substance

Write the letter of the box whose contents best match the description molecules of an element.

• b

• c

• d

• e

• f

Tags

NGSS.MS-PS1-1

Which of the following is not true about one mole?

• one mole contains 6.02 x 10²³ particles

• 12 g of carbon equals one mole of carbon atoms

• the mass of 1 mole of carbon atoms = the mass of 1 mole of boron atoms

• the number of atoms in 1 mole of carbon = the number of atoms in 1 mole of boron

The number oxygen atoms represented by the formula Pb(C₂O₄)₂  is

• 2

• 4

• 6

• 8

Tags

NGSS.MS-PS1-1

The molar mass of Na₂CO₃ is

• 51.0 g/mol

• 83.0 g/mol

• 96.0 g/mol

• 106.0 g/mol