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47 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Anything that takes up space and mass |
Matter |
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Refers to the quality of matter in a body regardless of its volume or of any forces acting on it |
Mass |
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The measure of the force of gravity acting on a body |
Weight |
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Building blocks of matter |
Atoms |
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Matter id made up of |
Atoms |
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Smallest particle of matter which has the properties of elemets |
Atom |
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Particles much smaller than atoms |
Subatomic particles |
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How many are naturally occurring? |
92 |
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How many are artificially produce? |
20 |
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How many elements have been identified? |
112 |
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How many substances are matter composed of? |
4 |
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Could be described as combination of four basic substances in various proportions modified by 4 basic essences |
Matter |
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According to _______ Matter could not be divided into smaller pieces forever |
Democritus 400 B.C. |
Greek’s view |
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He named the smallest piece of matter |
Democritus 400 B.C. |
Greek’s view |
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Not to be cut/ indivisible |
Atomos |
Democritus 400 B.C. |
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He describe the atoms that were small hard particles that were all made of the same material but were different shapes and sizes |
Democritus 400 B.C. |
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They favored the earth, fire , air and water approach to the nature of matter |
Aristotle and plato 350 B.C. |
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How many years atomos were buried? |
2000 years |
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Laid the foundation for modern atomic theory |
John dalton 1808 |
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He publish his book summarizing his experiments showing the elements could be classified according to integral values of atomic mass |
John dalton 1808 |
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What theory that The elements are made of extremely small particles |
John dalton’s Theory |
Atoms |
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Theory that atoms Can’t be subdivided, created or destroyed |
John dalton’s theory |
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Atoms given element are identical in size, mass, and other properties |
John dalton 1808 |
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Oxygen look alike,constructed alike and reacted alike |
Atoms |
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Chemical reaction, atoms, are combined, separated, or rearranged |
John dalton 1808 |
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Hooks and eyes to account for chemical combination |
Dalton’s atom |
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Atoms of different elements combine in simple whole number ratios to form chemical compounds |
Law of multiple proportions |
John dalton 1808 |
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Law states that when chemical elements combine, they do so in ratio of small whole numbers |
Law of multiple proportions |
John dalton’s |
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He concluded that “electrons were an integral part of all atoms” |
Joseph john J.J. Thompson |
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He concern with the investigation of physical properties of cathode rays electrons |
Joseph john J.J. Thomson |
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Cathode rays |
Electrons |
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He proposed the plum pudding model |
J.J thomson |
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Concluded Negative charges come from within the atom |
Jj thomson |
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Particle smaller than an atom had to exist |
Jj thomson |
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Atom was divisible |
Jj thomson |
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Thomson called negatively charged ________ today known as electrons |
Corpuscles |
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He disproved thomsons model He introduced the nuclear model |
Ernest Rutherford |
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He termed the center of the atom the nuclues |
Ernest Rutherford |
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Center of the atom |
Nucleus |
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He describe atom a containing a small dense positively charged center surrounded by a negative cloud of electrons |
Ernest Rutherford |
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The danish scientist ________ proposed an improvement placing each electron in a specific energy level |
Niels Bohr |
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Electrons move in definite orbits around the nucleus much like planets circle the sun |
Bohr’s atomic model / planetary model |
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He proposed that all particles of matter (from single atoms to large objects ) moving at some velocity would have the properties of a wave |
De Broglie’s Model of Matter / Particle - Wave Duality |
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Electrons can act like both particles and waves |
De Boglie’s model of matter particle wave duality |
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Wave of certain energy frequency and wavelength |
De Boglie’s model of matter particle wave duality |
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His ideas were a basis for developing the wave mechanics theory |
De Boglie’s model of matter particle wave duality |
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He received the nobel prize for physics on his wave nature of electrons discovery in 1929 |
De Boglie’s model of matter particle wave duality |
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