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Chemistry > Elements, Compound, and Mixtures > Flashcards

Elements, Compound, and Mixtures Flashcards

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1
Q

What is an element?

A

An element is a substance that consists of only one type of atom and can not be broken down into simpler substances by chemical means

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2
Q

What is an atom?

A

An atom is the smallest part of an element that can exist

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3
Q

Metal properties

A

Lustrous
Good conductor of heat
Good conductor of electricity
Ductile
Malleable
High melting point
Sonorous

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4
Q

What does lustrous mean?

A

Shiny

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5
Q

3 examples of magnetic metals

A

Iron
Cobalt
Nickel

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6
Q

What does malleable mean?

A

Can be hammered into shape

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7
Q

What does sonorous mean

A

Rings when struck

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8
Q

What does ductile mean

A

Can be drawn out into wires

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9
Q

Non-metal properties

A

Dull
Poor conductor of heat
Poor conductor of electricity
Low melting point

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10
Q

What is an exception for a dull non-metal

A

Diamonds 💎

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11
Q

What is a non-metal but does conduct electricity

A

Graphite

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12
Q

Where are metals found on the periodic table

A

Found to the left of the stepped line

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13
Q

Where are non-metals found on the periodic table

A

Are found to the right of the stepped line

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14
Q

What is a compound

A

A compound is a substance that consists of two or more DIFFERENT elements chemically bonded together

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15
Q

Buring magnesium in air

A

Grey solid at start
Burns with a bright light
Forms a white Ash

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16
Q

What does magnesium in air make

A

Magnesium + oxygen —— Magnesiumoxide

17
Q

What does Magnesiumoxide make

A

Makes a compound

18
Q

Buring iron wool in oxygen

A

Grey solid at start
Burns with orange sparks
Forms a black solid

19
Q

What is the word equation for iron wool and oxygen

A

Iron + oxygen —– iron oxide

20
Q

What does iron oxide make

A

A compound

21
Q

Sulfur burning in air

A

Starts a yellow power
Burns with a blue flame
And a colourless, pungent gas forms

22
Q

What is the word equation for sulfur and oxygen

A

Sulfur + oxygen —— sulfur dioxide

23
Q

What does sulfur dioxide make

A

A compound

24
Q

Why is this experiment carried out in a fume cupboard

A

Sulfur dioxide gas is toxic

25
Q

What is a molecule

A

A molecule is two is more atom chemically bonded together.

26
Q

What is a mixture

A

A mixture consists of two or more DIFFERENT SUBSTANCES that are not chemically bonded and can be easily separated

27
Q

Mixtures are separated by physical means

A

Distillation
Filtration
Evaporation
Separating funnel
Chromatography

28
Q

What is an alloy

A

An alloy is a MIXTURE of two or more elements, at least one that is a metal and resulting mixture has metallic properties

29
Q

What are some examples of a alloy

A

Brass - copper + zinc
Steal - iron + carbon

30
Q

🔴 🔴 🔴
🔴 🔴

A

Element
One type of atom

31
Q

🔴🟠 🔴🟠 🔴🟠

A

Compound
2 different elements are chemically bonded together ——molecules

32
Q

🟠🟠 🟠🟠 🟠🟠 🟠🟠
🟠🟠 🟠🟠

A

Element
Only one type of atom -molecules

33
Q

🟠 🔴
🔴 🟠

🟠 🔴

A

Mixture of 2 elements
-atoms

Chemistry (4 decks)

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