Chemistry- Review of Atomic Structure

Who believed that all matter was made up of earth, wind, water, and fire?

• Aristotle

• Dalton

• Franklin

Which scientist believed that matter was made up of indivisible particles called "atomos"?

• Dalton

• Democritus

• Einstein

Dalton's model of the atom was more believable because________.

• He was more popular

• He showed scientific evidence.

• He was a great scientist.

The smallest particle of an element that retains the chemical properties of that element.

• atom

• isotope

• ions

Tags

NGSS.MS-PS1-1

Which of the following is NOT included in Dalton's Atomic Theory?

• All matter consists of extremely tiny particles called atoms.

• Atoms cannot be subdivided, created, and destroyed

• Atoms of different elements combine as simple, whole number ratios to form chemical components.

• All matter is made up of indivisible particles called atomos.

Tags

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Which scientific theory states that chemical reactions are combined, separated and rearranged?

• Aristotle

• Democritus

• Dalton

Modern Atomic Theory differs from Dalton's in two ways. One way is that matter can be subdivided, created, or destroyed and the other is__________.

• All atoms are ions and isotopes.

• All atoms of the same element are identical in mass size and other properties.

• All matter consists of extremely tiny particles called atoms.

Which subatomic particle was discovered first?

• Proteins

• Neutrons

• Electrons

Tags

NGSS.MS-PS1-1

Which scientist discovered the electron and what was the experiment called?

• Dalton

  and

  Neurton Ray Experiment

• Einstein

  and

  Cathode Ray Experiment

• JJ Thomson

  and

  Cathode Ray Experiment

Streams of electrons observed in a discharge tube are called________?

• ions

• isotopes

• Cathode Ray

Tags

NGSS.HS-PS2-5

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