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Is Air a Mixture? Separating Mixtures Explained
Yes, air is a mixture. Its gases (mostly nitrogen, oxygen and a little argon) are not chemically combined, its make-up changes from day to...
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Chemistry
Is Air a Mixture? Separating Mixtures Explained
Yes, air is a mixture. Its gases (mostly nitrogen, oxygen and a little argon) are not chemically combined, its make-up changes from day to...
Biology
What is osmosis? Potato practical and active transport
Osmosis is the diffusion of water from a dilute solution to a more concentrated solution through a partially permeable membrane. Only the ...
Physics
Distance vs displacement: how can displacement be zero?
Displacement is zero whenever you finish exactly where you started. Distance is the length of the path you actually travel, so it only has...
Maths
How to write equations from word problems in 4 steps
To write an equation from a word problem, use four steps. Name the unknown with a letter and its units ("let d be the distance in mil...
Builds
ESP32 LED blink: code, circuit and the resistor you need
To blink an LED with an ESP32, run a wire from GPIO 23 to a 220 Ω resistor, the resistor to the LED's long leg, and the LED's shor...