Chemistry Questions

Measure of the amount of matter 

• mass
• volume
• weight
• density

Tags

NGSS.HS-PS1-7

Anything that has mass & takes up space

• gravity
• force
• matter
• volume

Tags

NGSS.MS-PS1-5

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:

• Definite 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

The ratio of elements in pure water can change based on where the water is from. Example a spring in Kansas compared to a spring in Europe.

• True

• False

Tags

NGSS.HS-ESS2-5

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

The Law of Multiple Proportions states

• when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers

• that every chemical compound contains fixed and constant proportions (by mass) of the elements that make up that compound.

• that matter is neither created nor destroyed, only changed during chemical reactions

Tags

NGSS.HS-PS1-7

One of Dalton's conclusions concerning his atomic theory was that all atoms of the same element are -

• combined
• different
• reacted
• the same