pHantastic
what does pH show in a substance?
if a mixture is basic or acidic
what are all of the counsellors and volunteers names? spell all of them out.
Victor, Joseph, Julissa, Vittorio, Hanaan
what is a sign of a physical reaction?
change in state of matter, change in appearance with no change to the chemical formula
what is the lab equipment we used to protect our hands?
nitrile gloves
what is the table where we can find our known elements?
the periodic table
what is considered a neutral pH?
pH 7
what type of coins did we use for our makeshift batteries?
what is a sign of a chemical change?
change in color, light, sound, or gas produced, and a precipitate produced
what is the lab equipment we used to separate our substances from our double displacement lab? (hint, it was a piece of paper we put in our flask)
filter paper
what is the center of the atom called? what does it contain?
the nucleus, contains protons and neutrons
what does pH stand for?
what did we use to curdle the milk?
vinegar
A + BC -> AC + B
single displacement
what is the small stick-like item we used to suck in and squirt liquids?
what is the chemical that we used to determine acids vs bases in yesterdays titration lab?
phenolphthalein
what pH is our stomach acid?
pH 2
what is voltage? what is current?
voltage is the speed of which electricity is traveling, current is the amount of electricity that is traveling
what kind of reaction is this
AB + CD -> AD + BC
double displacement
what is the name of the lab equipment we used to scoop items onto the scale?
scoopula
what is the name of the gas that tarnished the coins?
what does pH look for to determine acidity or alkalinity (alkalinity means basic)?
hydrogen ions or hydroxide ions
how does soap remove grease and oil from your hands?
the hydrophobic side binds to the oil molecules, while the hydrophilic side binds with the water molecules, carrying both the soap and oil molecules with the water
what type of reaction is this?
acid + base -> water + salt
neutralization
what is the name of the long glass pipe we used in yesterdays titration lab?
burette
what is the name of the plant based chemicals that act as pH indicators
anthocyanins