Science Test Oct 21

mass

the measure of the amount of matter in a substance

volume

the amount of space occupied by a substance

density

a value of how many particles are within an object and how tightly they are packed in there

sigfig

numbers that carry meaningful measurement information- tell us how precise measurement is and how detailed the tool used was

reactivity

the ease & speed at which substances combine

flammability

the ability of a substance to ignite and burn easily

malleability

how bendable an object is and how much it can withhold pressure from another object

quantitative data

data in numbers

qualitative data

data in word/images

experimental errors

the difference between a measurement and its accepted or true value, representing natural variation in data rather than a mistake

independent variable

what you are changing/testing

dependent variable

what you are measuring as a result of IV

control variable

what is NOT changing

constants

environment / things that are the same/ things you can control and need to be the same for every group

properties of the object

describes what an object looks like

physical properties

characteristics that be observed or measured without changing the substance's chemical identity

chemical properties

traits that describe how a substance reacts to other substances

CER

Claim Evidence and Reasoning

Length

meter

Mass

gram

Volume

mL or cm(cubed)

Density

grams/mL

Density's formula

mass/volume