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CCS Science 10 Flashcards > CHEMISTRY | Lessons 1-3 | The Atom (Grade 9 Review) > Flashcards

CHEMISTRY | Lessons 1-3 | The Atom (Grade 9 Review) Flashcards

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1
Q

Definition of:
Matter

A

Anything that has mass and takes up space

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2
Q

True or False:
Chemicals are found in all the matter around you

A

True

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3
Q

What are the three states a substance can be in?

A
  • Solid
  • Liquid
  • Gas
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4
Q

Characteristics of:
A solid

A
  • Definite shape
  • Definite volume
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5
Q

Characteristics of:
A liquid

A
  • Non-definite shape
  • Definite volume
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6
Q

Characteristics of:
A gas

A
  • Non-definite shape
  • Non-definite volume
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7
Q

Definition of:
Physical Property

A

A characteristic of a substance that does NOT produce a new substance.

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8
Q

Examples of:
Physical Property

A
  • Size
  • Shape
  • Color
  • Texture
  • Melting/freezing point
  • Conductivity
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9
Q

Definition of:
Chemical Property

A

A characteristic of a substance that can be observed in a chemical reaction.

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10
Q

Examples of:
Chemical Property

A
  • Flammability
  • Toxicity
  • Solubility
  • Radioactivity
  • Ability to rust or corrode
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11
Q

Definition of:
Physical Change

A

Changes a physical property of matter but NOT a chemical property

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12
Q

Definition of:
Chemical Change

A

Changes a Chemical property of matter

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13
Q

What are the 5 ways to identify a chemical change?

A
  1. The production of a new substance
  2. Color change
  3. Odor change
  4. A gas is produced
  5. Change of temperature
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14
Q

Definition of:
Pure Substance

A

Substances that are made up of only one kind of particle and have a fixed or constant structure.

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15
Q

True or False:
A pure substance can be an element or a compound

A

True

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16
Q

Definition of:
Element

A

A pure substance that can’t be broken down

17
Q

Definition of:
Compound

A

A pure substance made of 2 or more elements (can be broken down)

18
Q

How can a substance be identified?

A
  • Smell
  • Taste
  • Appearance
  • Etc
19
Q

Definition of:
Mixture

A

A combination of 2 or more pure substances

20
Q

Definition of:
Mechanical/Heterogeneous Mixture

A

A mixture that does not have the same composition throughout (different substances are visible)

21
Q

Definition of:
Homogeneous Mixture

A

A mixture that has the same composition throughout (different substances are NOT visible)

22
Q

What are the three subatomic particles?

A
  • Protons
  • Neutrons
  • Electrons
23
Q

Definition of:
Protons

A

Positively charged particles located in the nucleus of an atom

24
Q

Definition of:
Neutrons

A

Electrically neutral particles located in the nucleus of an atom

25
Q

Definition of:
Electrons

A

Negatively charged particles that surround the nucleus of an atom (in energy levels)

26
Q

What did Dalton contribute to the discovery of the atom?

A

Discovered that everything is made up of small particles (atoms)

27
Q

What did Thomson contribute to the discovery of the atom?

A

Discovered the electron

28
Q

What did Rutherford contribute to the discovery of the atom?

A

Discovered the atomic structure

29
Q

What did Bohr contribute to the discovery of the atom?

A

Discovered that electrons rotate in fixed orbits around the nucleus

30
Q

What does the atomic number on a Bohr diagram represent?

A

The amount of protons in an atom

31
Q

True or False:
In a neutral atom, the number of protons and electrons are different.

A

False:
In a neutral atom, the number of protons and electrons are the same

32
Q

Definition of:
Isotopes

A

Atoms of the same element that contain different amounts of neutrons

33
Q

Definition of:
Atomic molar mass

A

The average mass of an elements isotopes

34
Q

Definition of:
Mass number

A

The sum of all the protons and neutrons in an atom

CCS Science 10 Flashcards (7 decks)

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