A field of science that studies chemicals and their interactions with each other.
What is chemistry?
100
A substance containing a pH of 7.0
What is a neutral substance?
100
The state of matter where the the molecules have the least amount of kinetic energy.
What is solid?
100
Something that results in the creation of new chemicals, the release of gasses, the creation of light or heat, or breaking the bonds between atoms.
What is a chemical reaction?
100
Using various size filters, sieves, and strainers. Also using magnets, and by physically picking pieces out of a mixture.
What are ways to separate a solid mixture?
200
The property of water and other liquids that allow them to hold themselves together in drops.
What is surface tension?
200
A substance containing of pH of < 7.0.
What is an acid?
200
The state of matter where the molecules have the most space between them.
What is gas?
200
When a change of shape, a change in the state of matter, or the location of a substance changes.
What is a physical change?
200
Evaporation or precipitation.
What are ways to recover a solute from a solution?
300
A solution in which no more solute can be dissolved.
What is a saturated solution?
300
A substance containing of pH of > 7.0.
What is a base?
300
Ice, Water and Steam
What is water in its three states of matter?
300
A sustained chemical reaction where large amounts of heat and light are produced.
What is a fire?
300
Heating a saturated liquid to allow more solute to be dissolved in the liquid.
What is supersaturation?
400
A substance that contains only one type of atom (one element).
What is a pure substance?
400
A substance that can be used to determine the pH of a different substance. An example is red cabbage juice.
What is an indicator solution?
400
A state of matter where the molecules take the shape of their container, but have no shape of their own.
What is a liquid?
400
The gas that is released during baking soda and vinegar reaction.
What is carbon dioxide (CO2)?
400
A collection of molecules that have fallen out of a solution and arranged themselves in a particular pattern, making them hard, somewhat shiny, and rock-like.
What is a crystal?
500
A non-uniform mixture containing two or more different molecules. Example: A glass of water with sand at the bottom.
What is a heterogeneous solution?
500
What the "pH" in the pH scale stands for.
What is the "Power of Hydrogen?"
500
The type of energy that can be defined as "movement between molecules."
What is kinetic energy?
500
A chemical that does not cause a reaction, but rather speeds up a existing reaction.
What is a catalyst?
500
A solution where there are different atoms (elements) mixed together in a uniform way. For example, lemonade, soda, juice, tea or coffee.