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Grade 9 Studying > Science Chemistry Test > Flashcards

Science Chemistry Test Flashcards

1
Q

What are the six ideas of particle theory?

A

Temperature, Constant motion, Space, Uniqueness, Composition, Attraction

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2
Q

What is the “temperature” idea in particle theory?

A

hotter environment, particles move faster

cooler environment, particles slow down

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3
Q

What is the “constant motion” idea in particle theory?

A

Particles are always moving, even solids

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4
Q

What is the “space” idea in particle theory

A

there is space between the particles

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5
Q

What is the “uniqueness” idea in particle theory?

A

Particles of one type of matter are different from those of another type of matter

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6
Q

What is the “composition” idea in particle theory?

A

All matter is composed of particles

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7
Q

What is the “attraction” idea in particle theory?

A

All particles are attracted to each other

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8
Q

What is a mixture?

A

two or more pure substances mixed together

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9
Q

What is a homogeneous mixture?

A

A mixture which the substances are not distinguishable from each other

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10
Q

What is a heterogeneous mixture?

A

A mixture where the substances are distinguishable from each other

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11
Q

What are some physical properties?

A

lustre, malleability, colour, ductility, does light go through (transparent, translucent, opaque), change of states points (eg. boiling, freezing…), hardness (Moh’s hardness scale), density, conductivity

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12
Q

What does opaque mean?

A

no light can go through

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13
Q

What does translucent mean?

A

some light can go through (blurry)

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14
Q

What does transparent mean?

A

most light can go through

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15
Q

What is matter?

A

Anything that has mass and volume

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16
Q

What is a pure substance?

A

All the particles in the substance are the same

17
Q

What is an elemental pure substance?

A

The pure substance is made up of only one element

18
Q

What is a compound pure substance?

A

The pure substance is made up of two or more elements

19
Q

What is the definition of a physical property?

A

Something that we can determine with our senses (sight, smell, touch, etc)

20
Q

What is the definition of a chemical property?

A

a substance’s reactivity

21
Q

What are the differences between a physical change and a chemical change?

A

Physical change: change in shape, form, etc, but no new substance is formed

Chemical change: a new substance is formed

22
Q

What is the formula to calculate density?

A

mass / volume

23
Q

What is the formula to calculate mass?

A

density x volume

24
Q

What is the formula to calculate volume?

A

mass / density

25
Q
A

Grade 9 Studying (3 decks)

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