Basic concepts

Question 1

mass

Answer 1

the amount of matter in an object, amount of molecules

Question 2

volume

Answer 2

the amount of space an object takes up in 3 dimensions, l x w x h,

Question 3

density

Answer 3

depends on its mass and volume, tighter molecules=more dense, mass/volume

Question 4

graduated cylinder

Answer 4

to measure liquids accurately, mL, round to .5mL

Question 5

beaker

Answer 5

to hold and mix chemicals, mL, not used for measuring

Question 6

flask

Answer 6

to mix and store chemicals, mL, not used for measuring

Question 7

test tube

Answer 7

for mixing very small amounts of chemicals, no units, not used for measuring

Question 8

triple beam balance

Answer 8

triple beam balance to hold objects up to 650 grams, 0.05

Question 9

pipette

Answer 9

for adding liquids one drop at a time, drops/mL, whole drop- not accurate

Question 10

ruler

Answer 10

to find the lenght of objects in metric units, m, cm, or mm, round to 0.5mm 0.05cm

Question 11

thermometer

Answer 11

to determine the temperature of things, degrees celcius, 0.5c

Question 12

overflow cup

Answer 12

to help determine of an iregularly shaped objects, no units

Question 13

precision

Answer 13

how close results are to one another

Question 14

accuracy

Answer 14

how close results are to a known or true value