Solid, Liquid or Gas
Physical vs. Chemical Changes
Atoms
Chemical Reactions
Definitions
100
This state of matter has a definite (fixed) shape and volume.
What is a solid?
100
Example- ripping a piece of paper
What is a physical change?
100
The basic unit of matter (living and nonliving things).
What are atoms?
100
A change in a substance that does not change its identity.
What is a physical change.
100
Mixtures that is unevenly mixed with one another.
What is heterogeneous
200
This state of matter has a definite volume but takes the shape of its container.
What is a liquid?
200
Example- breaking bread
What is a physical change?
200
Positively charge particle on an atom.
What are protons?
200
A change in which one of more substances break apart to form a new substance.
What is a chemical change.
200
when a substance is evenly dispersed in another mixture
What is homogeneous mixture.
300
This state of matter expands to fill the room and has low density.
What is a gas?
300
Matter can not be created nor destroyed.
What is Law of Conservation of Matter?
300
Negatively charged particle on an atom.
What are electrons?
300
The substances that undergo change in a chemical reaction.
What is a reactant.
300
When we did our salt and water experiment, which substance was the solute and which was the solvent?
salt --- solute water --- solvent
400
State of Matter- SNOW
What is a solid?
400
The scientific name for when iron mixes with water and oxygen.
What is iron oxide?
400
The number of protons plus neutrons/ also makes up the nucleus of an atom
What is the atomic mass?
400
The total energy in making and breaking of bonds in a chemical reaction results in a net absorption of energy (it's cold).
What is endothermic
400
A substance that contains only one type of atom
What is an element.
500
State of Matter- CLOUDS
What is gas?
500
Solid turning directly into a gas.
What is sublimation?
500
Came up with the current model of the atom that we still use today.
Who is Niels Bohr?
500
The law that states that during a chemical reaction, matter is neither created nor destroyed.
What is conservation of matter
500
what is a substance that cannot be separated by physical means
What is a pure substance.
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