crying/first kinda quiz of grade 9 Flashcards
please just get most of them right/get them right QUICKLY
What does WHMIS stand for
Workplace Harzardous Material Information System
what does HHPS stand for
Household Hazardous Products symbol
Explosibe ball lookin symbol means…??
Explosive; container can explode if punctured or heated, will cause serious injuries, especially to eye
Skull + Crossbones symbol meaaaans….??
Poisonous and any form of that chemical getting into your body could harm you greatly or even kill you
Boney lookin hand
Corrosive; can burn skin or eyes
Fireirieieie
Flammable; this product can easily catch on fire if exposed to heat or sparks
Triangle vs octogon?
Triagngle means container is dangerous, octogojn means the products inside said container are dangerous.
Indications of chemical change?
Heat being produced, bubbling (not near heat source), colour changes/change of state (not always a sign of chemical change), tiny solid pices are formed.
Matter is…?
Matter is everything except energy
Qualitive properties?
feel/textire, taste, smell, colour
Quantitive propeeirtes
Freezing point, boliling point, density. (Aka, theres just a numbver value.)
Physical vs chemical change thing
Physical is describing its qualitives and quantitives properties, Chemical is describing how one substance reacts with another substance.
PARTICLE THEORYYYY
all material is made up of matter, particles are always moviing, particles are held together by bonds, particles of any substance are identitycal
Sooooo how do u find density :3
D = M/V
how to find mass
M = D x V
okayayay how do u find Volume
V = M/D
okay what if u have cm3 and cm3 on the same thing will it stay the same for like thr amswer or naahh
naahhhh they cancel eachother out okai
QUICKKKK name me the different kinds of mixtures or lmk gets cancelled!
OH GOD, Mechanical, solution, colloid, and suspension!
Name me some pure substances or murder drones gets forgotten completely
ATOMS AND COMPOUNDS :((
(oexegym, sodium, chloride, hydrogen, yk yk)
Describe me what a solution or im killing Tang
oky so a solution is a typa mixture where you cant tell apart the two or more substances in that mixture. btw mechnical is the opposite of that.
Mehchmincal mixtureeee?
Mixture where you can properly distinguish the two or more substances in that mixture (ex// pineapplepizza)
why is water freakin weird
when water in state of solid, it doesnt sink, unlike most substances. instead it floats. thats why ice floats! it less dense in the solid state than in the liquid state.
why si watr freeizung not a chemical change
despite the fact it changed states its not a chemical change becayse its still technically H20 its just in another state. Nothing reacted with the water to make it a whole new thing.
