States of Matter
This state of matter has a definite shape and a definite volume.
What is a solid?
A mixture that looks the same throughout, like salt water.
What is a homogeneous mixture (solution)?
If an object sinks in water, its density is (more/less) than water’s.
What is more than water’s density?
Elements that are shiny, good conductors, and malleable.
What are metals?
Bubbles forming during a reaction can mean this is produced.
What is a gas?
This state of matter takes the shape of its container but has a definite volume.
What is a liquid?
A mixture where you can see different parts, like a salad.
What is a heterogeneous mixture?
If an object floats, its density is (more/less) than water’s.
What is less than water’s density?
Elements that are dull, brittle, and poor conductors.
What are nonmetals?
A solid forming when two liquids are mixed is called this.
What is a precipitate?
This state of matter has no definite shape or volume.
What is a gas?
A substance made of only one kind of atom or molecule.
What is a pure substance?
Put the following in order from less to more density.
Vegetable Oil=0.91
Honey= 1.42
Gasoline= 0.70
Rubbing Alcohol = 0.79
Gasoline= 0.70
Rubbing Alcohol = 0.79
Vegetable Oil=0.91
Honey= 1.42
Elements with properties of both metals and nonmetals.
What are metalloids?
A change in color or temperature often signals this type of change.
What is a chemical change?
Particles in this state of matter have the least kinetic energy.
What is a solid?
Salt dissolved in water is an example of this kind of mixture.
What is a solution?
A piece of wood floats in water, but the same wood sinks in alcohol. Why?
What is water is denser than alcohol, so the wood is less dense than water but more dense than alcohol?
Most elements on the periodic table are this type.
What are metals?
Melting ice is a physical change. Burning paper is this kind of change.
What is a chemical change?
As the kinetic energy of particles increases, the substance changes from this state to this state.
What is solid to liquid (melting) or liquid to gas (evaporation)?
Oil and water form this type of mixture because they don’t mix evenly.
What is a heterogeneous mixture?
Why does ice float in water even though both are H₂O?
What is ice is less dense than liquid water?
Rare earth elements are important in making these modern items such as cell phones and magnets.
What are electronics or high-tech devices?
Name two pieces of evidence that a chemical change occurred.
What are gas production, color change, temperature change, precipitate formation (any two)?