deck_14981782 Flashcards

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1
Q

Definition of qualitative

A

the quality of something is being assessed, not its size or quantity

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2
Q

The part of a lab where you summarize your findings

A

Conclusion

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3
Q

The part of the lab where you record your data

A

Observations

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4
Q

The part of the lab where you make an educated guess about what will happen

A

Hypothesis

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5
Q

The beginning of a lab

A

Purpose/question

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6
Q

The list of items you will need to complete your lab

A

Materials

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7
Q

A set of instruction you will need to follow to complete your lab

A

Purpose/Question

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8
Q

What does WHMIS stand for?

A

Workplace Hazardous Materials Information System

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9
Q

What does HHPS stand for?

A

Hazardous Household product symbols

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10
Q

Define Physical Property

A

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance.

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11
Q

Define Chemical Property

A

The definition of a chemical property is a specific characteristic of a substance like an element or a compound, relating to how it can change as a result of a reaction.

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12
Q

Define Physical Change

A

Physical change is a type of change where the physical properties of matter change.

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13
Q

Define Chemical Change

A

A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed.

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14
Q

What are the 5 evidences of chemical change?

A

1.Change in color2. Bubbling3. light/heat4. Precipitation5. Odor

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15
Q

Define Colour

A

What it looks like

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16
Q

Define Odour

A

How it smells

17
Q

Texture

A

How it feels

18
Q

Lustre

A

Ability to reflect light

19
Q

Viscosity

A

Ability to flow

20
Q

Hardness

A

Ability to be scratched

21
Q

Clarity

A

The ability to allow light through itTransparent - clear/see throughTranslucent - foggyOpaque - can’t see through it

22
Q

Malleability

A

Can be bent or hammered into shapes

23
Q

Ductility

A

Can be pulled into wires

24
Q

Corrosive

A

Causes damage by a chemical reaction

25
Q

Flammable

A

Can burn or ignite easily

26
Q

Reactive

A

Change easily or vigorously when in contact with other substance

27
Q

The Billiard Ball model - envisioned the atom as a tiny indestructible sphere

A

Dalton

28
Q

Planetary Model- Electrons move in fixed shells or orbitals around the nucleus

A

Bohr

29
Q

Raisin Bun Model - negative particles rest in a positively charge ‘dough’

A

Thompson

30
Q

Four basic elements were believed to be essential for life

A

Ancient Greeks

31
Q

Quantum Mechanical model - Orbitals are regions of different shapes, based on the wave nature of electrons

A

Schrodinger

32
Q

He proposed that paramanu (the atom) is an indestructible particle of matter

A

Indian sage - Acharya Kanad

33
Q

Nuclear Model - the nucleus holds the positive charges and is very small, the negative electrons circle the outside

A

Rutherford