Heterogenous Mixtures
This type of heterogeneous mixture has large visible parts that can be easily separated by hand.
What is a Mechanical Mixture?
Which of the following is a homogeneous mixture?
A) Salad
B) Salt water
C) Trail mix
What is B, salt water?
To collect salt from the sea, ocean water is left in small pools to let the water evaporate and leave the salt behind. What separation technique is this?
What is evaporation?
The liquid that dissolves another substance in a solution.
What is a solvent?
The more of me you take away, the bigger I get. What am I?
What is a hole?
This type of mixture has particles that can settle out over time.
What is a suspension?
There is only one main type of mixture in this category. What is it?
What is a solution.
Scientists working in a medical lab use this to separate parts of blood.
What is a centrifuge?
A substance that is made of two or more elements or compounds physically combined, not chemically.
What is a mixture?
True or False: Bananas grow on trees.
What is false? (They grow on a type of herbaceous plant.)
Whipped cream looks smooth, but it is made of tiny air bubbles spread throughout a liquid and does not settle.
What type of heterogeneous mixture is this?
What is a colloid?
What is the name for the substance that gets dissolved in a solution?
What is a solute?
Your kidneys remove waste from your blood while keeping useful substances like water and glucose.
What separation method does this most closely show?
What is filtration?
A mixture that appears uniform but contains tiny particles that do not settle and can scatter light.
What is a colloid?
Which animal’s heart is so big, a human could swim through its arteries?
What is a blue whale?
A student mixes orange juice with pulp and lets it sit. The pulp slowly sinks to the bottom. What type of mixture is this AND what clue helped you decide?
What is a suspension because the particles settle over time?
What is true? Steel is a combination of iron and carbon
A mixture in a bowl contains oil and water. The oil floats on top.
Which method could you use to separate them?
What is decantation?
In a filtration experiment, the liquid that passes through the filter and is collected is called what?
What is the filtrate?
True or False: Octopuses have three hearts.
What is true?
Compare a suspension and a colloid by explaining how their particles behave over time.
What is in a suspension particles settle, but in a colloid they stay mixed?
Helium is added to a balloon filled with air. Explain why the resulting mixture is still considered homogeneous.
What is the helium mixes evenly with the air, so the gases are uniform throughout and cannot be seen separately?
Paper chromatography separates different pigments in ink.
In this experiment, the pigments stick to the paper while a liquid moves through.
What are the names of the moving liquid and the part that holds the pigments?
What is the mobile phase (liquid) and the stationary phase (paper)?
In a distillation experiment, the liquid that is collected after it evaporates and condenses is called what?
What is distillate?
The largest living structure on Earth can be seen from space. What is it?
What is the Great Barrier Reef?