Show:
Mixtures
Techniques of Separation
Water and CO2
Chemical and Physical Changes
Acids and Bases
100
The substance DOING the dissolving
What is solvent?
100
Used to separate nails from sand.
What are magnets?
100
The attraction between liquid molecules and other surfaces.
What is surface tension?
100
Another word for this is "irreversible change".
What is chemical change?
100
If the red litmus paper turns red, and the blue litmus paper turns red, the substance is a/an ______.
What is an acid?
200
Cereal in a bowl of milk is an example of this kind of mixture.
What is heterogeneous mixture?
200
The process of using an eyedropper to remove the top liquid from another, since the two do not mix.
What is decanting?
200
______ and ________ are two household items that produce carbon dioxide when mixed together.
What is vinegar and baking soda?
200
Freezing water into ice is an example of this change.
What is physical change?
200
Used to determine strong an acid or base is depending on different shades of colour.
What is a pH indicator?
300
In solutions, like sugar in coffee, sugar is called the _______.
What is a solute?
300
______ are used to separate different sizes of solid particles.
What are sieves?
300
Water ________ on glass or wax due to its surface tension.
What are beads?
300
A clue that a physical change has occurred is _________.
What is change in state? change in size/form/shape?
300
The ______ goes from 0-14.
What is the pH scale?
400
When two substances are EVENLY mixed, it is called a ______________ mixture.
What is homogeneous mixture?
400
The process used to separate two liquids that are EVENLY mixed.
What is distilling?
400
________ has a lower density than water, which is why it floats.
What is ice? paper clip?
400
A clue that a chemical change has occurred is __________.
What is release of energy? change in colour? formation of new substance?
400
An example of a household item that is acidic would be ________.
What is vinegar? lemon juice?
500
_______ and ________ is an example of a homogeneous mixture.
What is cream and tea? sugar and water?
500
The process used to separate two gases; where a gas is cooled until it becomes a liquid.
What is liquefying?
500
A measure of how much an item weighs compared to the space it takes up.
What is density?
500
An example of a chemical reaction is ______________.
What is burning wood? cooking?
500
An example of a household item that is basic is ________.
What is milk? soap?