Safety
These protect your eyes from splashes and spills
What are goggles
This is used to mix chemicals and can be heated on a hotplate safely
what is a beaker
The base units of mass measured in chemistry
What are grams
Measurements or results that come very close to the expected value are ___________
What is accurate
In an experiment, the _________ do not change.
What are the constants
Suzie needs this to keep her hair from catching on fire
What is a hair tie
Used to make a precise measurement of liquids
What is a graduated cylinder
There are 1000 of these in 1 L
What are mL
Values that show consistency in the experiment are ___________
What is precise
The part of the experiment that is not affected by changing variables and used for comparison
What is the control
To know how to respond to a known chemical spill you would consult this guide
Safety Data Sheet or SDS.
This is used to measure the mass of a sample
The unit for the density of liquids
What is g/mL
Fred is conducting an experiment and expects to find a density near 0.98 g/mL.
His values are 0.72 g/mL, 0.75 g/mL and 0.73 g/mL
His values are _________ but not _______
What is precise and accurate
The variable that is changed by the experimenter to test the question
What is the independent variable
The recommended amount of time to wash your hands
20 seconds
To transfer a liquid from one container to another
What is a pipette?
I take the reading there when the meniscus is convex
What is the top of the meniscus?
An archer is target shooting and hits the bullseye one time out of 5. Hitting the bullseye shows__________
What is accuracy
The variable that changes as a result of the experiment
What is the dependent variable
This act could cause ingestion of harmful chemicals and is prohibited in the laboratory
What is eating and drinking
When testing small amounts of solutions for comparison __________ may be used
What are test tubes
Normally, when measuring liquids, read the bottom of this
What is the meniscus
What is precise
This value is always placed on the x axis of a line graph
What is the independent variable