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Year 9 Flash Cards > Science - Testing, mixing, and separating > Flashcards

Science - Testing, mixing, and separating Flashcards

1
Q

What is a solute?

A

the substance you dissolve (sugar)

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2
Q

What is a solvent?

A

the liquid that you dissolve substances in (water)

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3
Q

What is a solution?

A

the mixture formed when you dissolve a solute into a solvent

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4
Q

What is a soluble?

A

to be able to be dissolved in a solvent

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5
Q

What is insoluble?

A

unable to be dissolved in a solvent

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6
Q

What is dissolve?

A

the process of mixing the solute with the solvent to give a clear solution

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7
Q

What is concentrated?

A

lots of particles of a solute that are present in a given volume of solvent

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8
Q

What is dilute?

A

few particles of a solute are present

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9
Q

What is the name for the test for oxygen?

A

The glowing splint test for oxygen

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10
Q

What is the name of the test for C02?

A

The limewater test for Carbon Dioxide

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11
Q

What is the name of the test for hydrogen?

A

The pop test for hydrogen

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12
Q

What is the chemical formula for oxygen?

A

Hydrogen peroxide (manganese dioxide) = water + oxygen

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13
Q

What is the chemical formula for hydrogen?

A

Magnesium +
hydrochloric acid =
magnesium chloride
+ hydrogen

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14
Q

What is the chemical formula for C02?

A

Calcium carbonate +
nitric acid = calcium
nitrate + carbon
dioxide + water

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15
Q

What is a positive test for hydrogen?

A

When it pops

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16
Q

What is a positive test for oxygen?

A

When the splint relights multiple times

17
Q

What is a positive test for C02?

A

When the lime water becomes milky

18
Q

What is a compound?

A

A chemical substance made of two or more elements combined together

19
Q

What is a frequency?

A
20
Q

What is a negative test for hydrogen?

A
21
Q

What does all 3 gases have in common?

A

Odourless, colourless gases

22
Q

Is hydrogen explosive?

A

Yes

23
Q

Is C02 combustible?

A

No

24
Q

Is oxygen combustible?

A

Yes

25
Q

Is C02 not used in photosynthesis?

A

No

26
Q

What is a mixture?

A

A mixture physically combined where properties remain

27
Q

What are some examples for compounds?

A

Water (h20)
Salt (NaCl)

28
Q

What are some examples for mixtures?

A

Coffee
Air
Sea water
Soil

29
Q

What is the chemical formula for hydrochloride?

A

HCl

30
Q

What is MgCl2?

A

Magnesium chloride

31
Q

What is a negative test for oxygen?

A
32
Q

What is a negative test for carbon dioxide?

A

Year 9 Flash Cards (18 decks)

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