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What else can I help you with?
What gas is formed in a test tube with the green water plan?
Oxygen
When baking soda is added vinegar what are the bubbles that are formed made of?
We can see the bubbles in the test tube and effervesence can be seen. If you close the test tube with your thumb you can feel the pressure producing. for some burning gases you can check by intoducing the opening of test tube to flame.
If heat a pinch of sugar for about 1 minute observe what is formed on the cooler side of the test tube?
toffee
Why is there no convection current when the liquid in the test tube is heated at the top?
because convection currents are caused by the liquid being heated, becoming less dense due to increased kinetic energy and rising. if you are heating the top of the test tube, there is nowhere for them to 'rise' to, so no current is formed, as they do not reach a place where they cool and sink to the bottom. thus convection currents are only formed when heating the bottom of a test tube.
What you must do to inspect the drink tube assembly?
perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test perform a tube leak test
What is used for holding a test tube in place when the tube is hot or should not be touched?
A test tube holder, also known as test tube clamp or test tube rack, is used to hold a test tube in place when the tube is hot or should not be touched. It allows safe handling of test tubes during heating or when conducting chemical reactions.
If a reaction produces an insoluble salt what will you notice happening in the test tube?
If a reaction produces an insoluble salt, you will observe the formation of a cloudy or precipitate solution in the test tube. This indicates that a chemical reaction has occurred and a solid salt has been formed that is not soluble in the reaction mixture.
What is the blood red residue formed in a glass test tube when copper carbonate is heated vigourously with carbon?
Elemental copper.
What is the source of error when using a test tube?
A test tube (or sample tube) has no errors.
What can a test tube be held upright with?
A test tube can be held upright using a test tube rack, a test tube holder, or a clamp attached to a stand. These tools provide stability and prevent the test tube from tipping over during experiments.
Can you place a hot test tube in a test tube rack?
It is not recommended to place a hot test tube directly into a test tube rack as this can cause damage to both the test tube and the rack. It is advised to allow the test tube to cool down before placing it in the rack to prevent any accidents or mishaps.
What is Hard test tube?
a hard glass test tube is a test tube made out of glass that is almost impossible to break.
