Lab Flashcards
Why do we use a test tube holder?
Used to hold a test tube so we can hold it over a Bunsen burner flame to be heated
What do we use TEST TUBES for?
Glass tubes used for most reactions
Can be heated
Why do we use a beaker?
Glass container for liquids
Can be heated
An approximate volume
What do we use a filter funnel for?
Used to help pour liquids into containers
When lined with filter paper, we use it to filter solids from a liquid
What are measuring cylinders used for?
To accurately measure the volume of liquids
Conical flasks are used in the same way as ________ cylinders
Measuring cylinders
Except we can’t pour them
Use of a tripod?
Metal stand that is placed over a Bunsen burner so that beakers etc can be heated
Gauze mat use?
Will support glass ware when placed across a tripod stand to be heated
Evaporating dish use?
Used to collect solids left behind when liquids are evaporated
5 steps to lighting a Bunsen burner?
Step 1. Check for safety
Step 2. Check holes are CLOSED
Step 3. Light the match
Step 4. Turn on the gas
Step 5. Hold the match over the Bunsen burner until it ignites
A lighted wooden splint makes a popping noise in a test tube of _______
Hydrogen
A glowing splint reignites in a test tube of _______
Oxygen
Bubble the _________ gas through limewater. __________ turns limewater cloudy white
Carbon dioxide
Define a hypothesis?
A explanation for an observation
An ____ is a desired outcome
Aim