Chemical Reactions
Random
Properties of a substance
Random
States of Matter
100
Reactants
What are molecules that react and that you put into a chemical formula?
100
Yes.
Does what goes into a reaction weigh the same as what comes out in the product?
100
d=mass/volume
What is the density formula?
100
Causes them to speed up and spread apart.
Adding heat does what to molecules?
100
Solids.
What is state of matter has the lowest energy state?
200
Products
What do reactants create in a chemical reaction?
200
Yes.
Do chemical reactions create a new product?
200
Yes, the weight is not. Mass is the amount of matter in an object.
Is the mass of an object the same no matter where in the universe the object is located? What is mass?
200
Plasma
What is an electrically charged gas?
300
Energy
What is released when new bonds are formed in the products?
300
Physical
Changes in state are chemical or physical reactions?
300
Polymers. Both begin with p.
Plastics are made from individual molecules bonded together into long chains called what?
300
Colloid
What is mixture of two states of matter?
400
Irreversible reactions
What is it called when you cannot undo a reaction?
400
Physical changes
Changes in a substance that do not involve a change in the identity or chemical make-up of a substance is called what?
400
Weight is a measure of the gravitational force on a object, but mass is the amount of matter in an object.
What is the difference between mass and weight?
400
Sublimation.
What is the phase transition from the solid to the gaseous phase, without passing through an intermediate liquid phase?
500
Chemical reaction
What is it called when the bonds between the atoms in the reactants are broken, the atoms rearrange, and atoms re-bond to make the products?
500
Great amount of space
What does porous mean?
500
Chemical
Does the change of color of a substance indicate a chemical or physical change?
500
Stalactites
What are stone “icicles” that grow as minerals left behind by dripping water from the cave roof?
500
CO2.
Dry ice is frozen what?
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