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GEAS: General Chemistry > Introduction? > Flashcards

Introduction? Flashcards

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1
Q

What are found in the nucleus of an atom?

A

Protons and Neutrons

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2
Q

What is the negatively charged particle of an atom?

A

Electrons

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3
Q

What is the positively charged particle of an atom?

A

Protons

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4
Q

What is the particle of an atom that has no electrical charge?

A

Neutron

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5
Q

The word “atom” comes from Greek “Atomos” which means what?

A

Indivisible

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6
Q

Who was the first person to propose that atoms have weights?

A

John Dalton

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7
Q

Who discovered the electron?

A

Joseph John Thomson

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8
Q

Who discovered the proton?

A

Ernest Rutherford

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9
Q

Who discovered the neutron?

A

James Chadwick

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10
Q

What is anything that occupies space and has mass?

A

Matter

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11
Q

All forms of matter are composed of the same building blocks called______.

A

atom

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12
Q

How are substances classified

A

Elements or Compounds

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13
Q

What is a substance that cannot be broken down into simpler substances?

A

Element

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14
Q

What is the result from the combination, in definite proportion of mass, of two or more elements?

A

Compound

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15
Q

How are mixtures classified?

A

Suspension, Colloids or Solutions

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16
Q

The mixture of soil and water is an example of what classification of a mixture?

A

Suspension

17
Q

A very fine particle of soil when mixed to water will form a cloudy mixture. How is this mixture classified?

A

Colloid

18
Q

The particles of sugar dispersed in water are so small that a clear homogeneous mixture. What is this homogeneous mixture called?

A

Solution

19
Q

How are elements classified?

A

Metals, Nonmetals or Metalloids

20
Q

What are the three states of matter?

A

Solid, Liquid and Gas

21
Q

Compounds are mostly classified as:

A

Acids and Bases

22
Q

What is the property of metals that allow them to be rolled without breaking?

A

Malleability

23
Q

What is the property of metals that reflects the light that strikes their surfaces, making them appear shiny?

A

Luster

GEAS: General Chemistry (2 decks)

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