bio scientific inquiry unit 1

base unit for length

meter (m)

• mm, cm, m, km

what is used to measure length

ruler

base unit for mass

grams (g)

• mg, g, kg

what is used to measure mass

triple beam balance or electronic scale

base unit for volume

liter

• ml, l

what is used to measure volume

graduated cylinder, beaker, flask

base unit for temperature

celsius

• degrees C

what is used to measure temperature

thermometer

what is the symbol for kilo

k / x 10³

what is the prefix of 1/1000 of something

mili

what is 1/100 of a meter

cm

what are two symbols that are used to measure volume

ml, l

volume

amount of space object takes up

mass

amount of matter object takes up

temperature

molecular movement in substance

length

distance from 1 point to another

what is the term to know the metric conversion

king henry died by drinking chocolate milk

what is the dimensional analysis formula if you are moving the decimal to the right
ex: 1L to mL

what is the dimensional analysis formula if you are moving the decimal to the left
ex: 1000mL to L

1000mL /1     x     1L / 1000mL

what do you always do if there is a digit not recorded on the equipment

estimate last digit/no naked numbers

ex: 3.0

what do you always do before using the tripe beam balance

0 the balance

what should you do if glassware is broken

report to the teacher immediately

what do you do when you are handling glassware

put on safety goggles

what should you always do before storing a flask

close it with a rubber stopper

what do you use the flask for

to stir and swirl the liquid inside

what is a beaker for

measuring and pouring liquids

what is a graduated cylinder used to measure for

precise volume of liquid

how should you measure liquid from a graduated cylinder

at eye level (below the curve) from the bottom and always estimate last digit

what is a meniscus

curved surface of liquid in graduated cylinder

what are test tubes used for

containing and mixing liquids

what can a test tube be closed with 

rubber stopper

how is a test tube heated

into a beaker of water that is on a hot plate (hot water bath)

what are hot plates used for

heat liquids inside of test tubes, flasks, and beakers

what are the safety rules when using a hot plate

1. goggles should be worn when using heat

2. never heat a CLOSED container

3. never heat an object facing you or others (should always be facing away while heating)

what is temperature measured in

degrees celsius

what is the freezing temp for water

0 c

what is the boiling temp of water

100 c

what is normal human body temp

37 c

what is room temp

23 c

what is proper lab attire

1. tight clothing

2. hair tied up

3. no open toe shoes

what items are never allowed in a lab

food, drinks, and gum

what conditions should lab areas be kept in

clean and no unnecessary materials

what 3 times should you wear safety goggles

1. working with glassware

2. working with chemicals]

3. heating stuff

what are 2 rules when heating a test tube

1. point away from you and others

2. use tongs to pick it up

why should a closed container never be heated

the gas inside can expand and explode

What might be on glassware that is “dirty?”

Leftover chemicals

Explain the proper way to “smell” a chemical.

Use a wafting motion

When doing an experiment, what should be done with chemical wastes?

dispose of materials as instructed, never put materials down the sink or in the trash without permission

why is it important to throw away glassware in the glass bin

So the people throwing it away after are aware that they are handling with glass and don't get cuts or hurt

Identify 5 pieces of lab safety equipment that you need to know the location of in the classroom

fire extinguisher, fire blanket, first exit, safety shower, and eyewash station

When you complete your lab, what should you do

notify teacher and follow cleanup instructions and return all equipment to its proper place

what should you do when someone is on fire

use a fire blanket because fire extinguishers have a lot of chemicals

what is quantitative data

data that includes numbers

what is qualitative data

data that doesn’t include numbers like characteristics or stuff from the five senses

what is the independent variable

the variable that you control on purpose

what is the dependent variable

the variable that is affected by the iv and measured

what is the format of a hypothesis

if (iv), then (dv)

what is a hypothesis

predicts the outcome of an experiment and based on background knowledge

what is a control group

the group not being tested on

what is the experimental group

the group being experimented on

how do you increase the validity of results

increasing sample size and doing multiple trials

what are constants

things that stay the same in a experiment like the type of something or the equipment

how do you make a valid claim

by using evidence like quantitative or qualitative data

what does TAILS stand for in graphing

t = title

a = axis

i = intervals (are they even)

l = legend/key

s = scale

how much does the data have to take up in a graph

about 75%

do you have to start at 0 for a graph

no unless its a bar graph or in the data set

what could the title of a graph be

effect of iv on dv and include units

what do you include when labelling the y and x axis

the units

when making a key what do you put

the value of each box

never connect to 0 unless

its a data point

what is a line graph

tracks change over intervals like temperature, pH, time, etc

what is a bar graph

categorical data and compares data between groups

what is a histogram 

shows distribution 

what is the difference between a histogram and bar graph

histogram bars are touching and range of data is divided into equal intervals

what is a positive relationship

the data increases

what is a negative relationship

the data decreases

what is a direct relationship and what other relationship is it

increases and linear

what is a indirect relationship and what other relationship is it

decreases and negative

what is a non-linear relationship

exponential or fluctuating

what do you put around the unit in a graph

parenthesis
ex: (kg)