FUNDAMENTAL LAWS OF CHEMISTRY

Measure of the amount of matter 

• mass
• volume
• weight
• density

Anything that has mass & takes up space

• gravity
• force
• matter
• volume

The percentage of copper and oxygen in samples of “CuO” obtained by different methods were found to be the same. This illustrates the law of:

• Constant proportions

• Conservation of mass

• Multiple proportions

• Reciprocal proportions

Tags

NGSS.HS-PS1-7

A balanced chemical equation is in accordance with:

• Avogadro's law

• Law of conservation of mass

• Law of multiple proportions

• Law of reciprocal proportions

Tags

NGSS.HS-PS1-7

Law of constant proportion is also referred to as law of definite proportion

• True

• False

Name the scientist who put forth the law of constant proportion

• Rutherford

• Newton

• Antoine lavoisier

• J.L.Proust

Tags

NGSS.MS-PS1-5

The ratio of constituent elements in water from different sources are not always the same

• True

• False

Tags

NGSS.HS-ESS2-5

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.0500 moles
• 1.81 x 10⁴⁶ moles
• 5.00 x 10²¹ moles
• 5.00 moles

Tags

NGSS.HS-PS1-7

How many molecules are in 2.00 moles of H₂O?

• 124x10²⁴ molecules of H₂O
• 1.20x10²³ molecules of H₂O
• 1.20x10²⁴ molecules H₂O
• 124

Tags

NGSS.HS-PS1-7

How many atoms are in 1.50 moles of Hg?

• 9.03x10²³ atoms Hg
• 9.03x10²⁴ atoms Hg
• 903 atoms of Hg
• 9.03 atoms of Hg

Tags

NGSS.HS-PS1-7