M3 Test Review - Chemistry

an explanation supported by many experiments; is still subject to new experimental data, can be modified, and is considered successful if it can be used to make predictions that are true

a theory proposed by John Dalton in 1808, based on numerous scientific experiments, which marked the beginning of the development of modern atomic theory

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

According to Dalton’s atomic theory, in chemical reactions, atoms

• do all of these

• are combined

• are rearranged

• are separated

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

smallest particle that retains the properties of an element

a visual, verbal, and/or mathematical explanation of data collected from many experiments

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NGSS.MS-PS3-1

Who proposed that all matter is made of combinations of the four basic element?

• Curie

• Democritus

• Milikan

• Aristotle

ray of radiation emitting from the cathode end and traveling to the anode end of a tube used by researchers to study mass and charge

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NGSS.HS-PS4-3

Atoms of the same element that have different mass numbers are called.

• moles

• atoms

• elements

• isotopes

Which part of Dalton’s Theory is no longer accepted?

• atoms of the same element are identical

• these are all still accepted

• all elements are composed of tiny invisible particles called atoms

• atoms of different elements can mix together in simple whole number ratios

How can you find the mass number of an element?

• add protons and neutrons

• add protons and electrons

• it is listed on the periodic table

• subtract protons from neutrons