4.1 Defining the Atom

smallest particle of matter that retain the properties of element is ____________________

• atom

• proton

• cathode

• energy

Tags

NGSS.MS-PS1-1

atom is very ___________________

• large

• small

• red

• negative

Tags

NGSS.MS-PS1-1

Who was the first person to "think" of an atom?

• Democritus

• J.J. Thompson

• Rutherford

• Bohr

Used the word "atomos" to decsribe the uncuttable (indivisible) atom.

• Democritus

• Thomson

• Bohr

• Dalton

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

• Atoms
• Parts
• Molecules
• Hydrogen

Who was the first person to "think" of an atom?

• Democritus

• J.J. Thompson

• Rutherford

• Bohr

Dalton had 4 points about an atom, which is NOT one?

• Atoms combine in whole ratios

• An atom of one element will never turn into an atom of another

• Electrons have a set size and path

• Atoms are indivisible

Democritus has been pointed out as the founder of atomism.

• True

• False

"atom" means, in Greek_________________.

• imperfection

• inseparable

• world

• soul

Which of the following is NOT a part of Dalton's atomic theory?

• All matter is composed of atoms and empty space

• Atoms are always in motion.

• Atoms of the same element are identical.

• Atoms can't be destroyed...merely re-arranged.

Tags

NGSS.HS-PS1-7