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1. Science 10 > Text A Chemistry 1.1 Investigating And Working With Chemicals > Flashcards

Text A Chemistry 1.1 Investigating And Working With Chemicals Flashcards

1
Q

When did chemistry, as it is known today, emerge?

A

Late 1700s

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2
Q

What were dyes for decorating fabrics historically obtained from?

A

Local plants

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3
Q

Name a plant that produces a blue-green dye.

A

Delphinium

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4
Q

What dye is produced from the roots of bloodroot plants?

A

Orange dye

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5
Q

For what purposes have Aboriginal peoples used chemical properties?

A

Clothing, food preservation, illness treatment, tool building, and decoration

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6
Q

What did many Aboriginal peoples mix with animal fat to build waterproof canoes?

A

Pine or spruce gum

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7
Q

What technique did Aboriginal peoples use to tan leather?

A

Various techniques including a mixture of ashes and water

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8
Q

What substances in ashes helped to break down the mucous layer on hides?

A

Chemical substances

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9
Q

What was applied to hides to create soft, water-resistant buckskin?

A

Animal brains

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10
Q

What does the process of using animal brains to tan leather called?

A

Brain-tanning

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11
Q

Which plant was used by many Aboriginal peoples to treat coughs and colds?

A

Wild ginger

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12
Q

What can be made from the juice of juniper berries to soothe insect bites?

A

Tea

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13
Q

Fill in the blank: Aboriginal peoples used _______ to preserve food.

A

[chemical properties]

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14
Q

True or False: The use of chemical substances by humans is a recent development.

A

False

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15
Q

What is one benefit of traditional tanning methods compared to mass-production methods?

A

Hides tanned using traditional methods are said to be softer and stronger

Traditional methods are still preferred by some Aboriginal people and others interested in these techniques.

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16
Q

What has become more popular alongside modern medicine?

A

Ancient means of healing and herbal medicine

This resurgence is partly due to an increased interest in traditional methods.

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17
Q

What is the purpose of a Material Safety Data Sheet (MSDS)?

A

To provide important information about a chemical

An MSDS includes physical properties, chemical hazards, handling instructions, storage, and disposal information.

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18
Q

What must everyone who works with chemicals know?

A

How to handle them safely and responsibly

Improper handling can be dangerous, even with household substances.

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19
Q

What type of clothing may be required when handling chemicals?

A

Protective clothing

This is essential for safety in the chemistry laboratory.

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20
Q

Fill in the blank: An MSDS includes instructions on how to _______.

A

[handle, store, and dispose of the chemical]

These instructions are crucial for safe chemical management.

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21
Q

True or False: Native medicines are no longer used today.

A

False

Native medicines are still gathered, prepared, and administered by trained individuals.

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22
Q

What should you consult to find out how to handle a chemical safely?

A

Material Safety Data Sheet (MSDS)

The MSDS contains essential safety information for each chemical.

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23
Q

What kind of information does an MSDS include regarding the chemical?

A

Physical properties and chemical hazards

Examples of physical properties include melting point and boiling point.

24
Q

Why is safety important in the chemistry laboratory?

A

Improper handling of chemicals can be dangerous

This applies to both professional and household chemicals.

25
Q

What is one benefit of traditional tanning methods compared to mass-production methods?

A

Hides tanned using traditional methods are said to be softer and stronger

Traditional methods are still preferred by some Aboriginal people and others interested in these techniques.

26
Q

What has become more popular alongside modern medicine?

A

Ancient means of healing and herbal medicine

This resurgence is partly due to an increased interest in traditional methods.

27
Q

What is the purpose of a Material Safety Data Sheet (MSDS)?

A

To provide important information about a chemical

An MSDS includes physical properties, chemical hazards, handling instructions, storage, and disposal information.

28
Q

What must everyone who works with chemicals know?

A

How to handle them safely and responsibly

Improper handling can be dangerous, even with household substances.

29
Q

What type of clothing may be required when handling chemicals?

A

Protective clothing

This is essential for safety in the chemistry laboratory.

30
Q

Fill in the blank: An MSDS includes instructions on how to _______.

A

[handle, store, and dispose of the chemical]

These instructions are crucial for safe chemical management.

31
Q

True or False: Native medicines are no longer used today.

A

False

Native medicines are still gathered, prepared, and administered by trained individuals.

32
Q

What should you consult to find out how to handle a chemical safely?

A

Material Safety Data Sheet (MSDS)

The MSDS contains essential safety information for each chemical.

33
Q

What kind of information does an MSDS include regarding the chemical?

A

Physical properties and chemical hazards

Examples of physical properties include melting point and boiling point.

34
Q

Why is safety important in the chemistry laboratory?

A

Improper handling of chemicals can be dangerous

This applies to both professional and household chemicals.

35
Q

What are the four ‘elements’ according to Ancient Greek philosophers?

A

Earth, water, fire, air

These elements were thought to compose all matter.

36
Q

What are the four humours in Ancient Western medicine?

A
  • Black bile (earth)
  • Phlegm (water)
  • Yellow bile (fire)
  • Blood (air)

Each humour was thought to correspond to one of the four elements.

37
Q

What was believed to determine a person’s temperament and health in Ancient Western medicine?

A

The balance of the four humours

An imbalance was thought to cause illness.

38
Q

What medical practice was used to restore balance to the humours?

A

Bloodletting

This was thought to cure illnesses associated with air and fire.

39
Q

Until when did the theory of the four humours persist?

A

Late 16th century

40
Q

What is matter defined as?

A

Anything with mass and volume

Matter can exist as solid, liquid, or gas.

41
Q

What is a heterogeneous mixture?

A

Combinations of matter that can be separated by physical means

Components are visible and composition is variable.

42
Q

What is a homogeneous mixture?

A

Different components are not visible

Composition is constant throughout the mixture.

43
Q

Classify seawater as either a pure substance or a mixture.

44
Q

Classify iron as either a pure substance or a mixture.

A

Pure substance

45
Q

Classify copper (Cu) as either a pure substance, element, or compound.

46
Q

Classify oxygen (O2) as either a pure substance, element, or compound.

47
Q

Classify sugar dissolved in water as either a homogeneous or heterogeneous mixture.

A

Homogeneous mixture

48
Q

Classify cranberry juice as either a homogeneous or heterogeneous mixture.

A

Heterogeneous mixture

49
Q

What is a pure substance?

A

Matter that has a definite composition

Pure substances can be elements or compounds.

50
Q

What is a compound?

A

Two or more elements that are chemically combined

Compounds can be separated chemically into simpler substances.

51
Q

Classify water (H2O) as either an element or a compound.

52
Q

Classify sodium chloride (table salt) as either an element or a compound.

53
Q

Classify steel as either a homogeneous or heterogeneous mixture.

A

Homogeneous mixture

54
Q

Classify bronze as either a pure substance, element, or compound.

A

Alloy (homogeneous mixture)

55
Q

Classify methane (CH4) as either an element or a compound.

56
Q

What is the definition of a pure substance?

A

Matter that has a definite composition

Pure substances include elements and compounds.

1. Science 10 (15 decks)

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