Science - Testing, mixing, and separating Flashcards
What is a solute?
the substance you dissolve (sugar)
What is a solvent?
the liquid that you dissolve substances in (water)
What is a solution?
the mixture formed when you dissolve a solute into a solvent
What is a soluble?
to be able to be dissolved in a solvent
What is insoluble?
unable to be dissolved in a solvent
What is dissolve?
the process of mixing the solute with the solvent to give a clear solution
What is concentrated?
lots of particles of a solute that are present in a given volume of solvent
What is dilute?
few particles of a solute are present
What is the name for the test for oxygen?
The glowing splint test for oxygen
What is the name of the test for C02?
The limewater test for Carbon Dioxide
What is the name of the test for hydrogen?
The pop test for hydrogen
What is the chemical formula for oxygen?
Hydrogen peroxide (manganese dioxide) = water + oxygen
What is the chemical formula for hydrogen?
Magnesium +
hydrochloric acid =
magnesium chloride
+ hydrogen
What is the chemical formula for C02?
Calcium carbonate +
nitric acid = calcium
nitrate + carbon
dioxide + water
What is a positive test for hydrogen?
When it pops
What is a positive test for oxygen?
When the splint relights multiple times
What is a positive test for C02?
When the lime water becomes milky
What is a compound?
A chemical substance made of two or more elements combined together
What is a frequency?
What is a negative test for hydrogen?
What does all 3 gases have in common?
Odourless, colourless gases
Is hydrogen explosive?
Yes
Is C02 combustible?
No
Is oxygen combustible?
Yes
Is C02 not used in photosynthesis?
No
What is a mixture?
A mixture physically combined where properties remain
What are some examples for compounds?
Water (h20)
Salt (NaCl)
What are some examples for mixtures?
Coffee
Air
Sea water
Soil
What is the chemical formula for hydrochloride?
HCl
What is MgCl2?
Magnesium chloride
What is a negative test for oxygen?
What is a negative test for carbon dioxide?
