Mixtures and Solutions
What type of mixture is gravel?
A mechanical mixture
What is an atom?
A very small particle which makes up all matter.
What is made of atoms?
Everything/Matter
What state of matter is ice?
Solid
What's a solute?
The substance being dissolved
What type of mixture is sugar water?
A solution
What is a force?
A push or pull on an object
What are the positive pieces of an atom called?
Protons
What are the three states of matter? (Bonus points for 4th and/or 5th)
Solid, Liquid, and Gas
What do you get when two different elements combine?
A compound
How can you tell a solution from a liquid?
On the atomic scale, a liquid only contains one kind of molecule, whereas a solution contains 2 or more kinds of molecules.
What is a solution?
A mixture where two different kinds of substances are evenly mixed, creating a mixture which appears to be a single substance to the naked eye.
What do the particles do in a gas?
Spread out and move around, without a fixed shape or volume
Do the molecules that make up a substance change when the substance melts?
No, the molecules stay the same. The attraction between the molecules change.
Where are the electrons in an atom?
They orbit the atomic nucleus.
Why do some things dissolve better in water
Water is polar, which means that it has a partial charge on either side of it. This partial charge attracts other charged atoms or molecules, letting water keep them suspended in solution more easily.
What is polarity?
The charge imbalance created when atoms in a molecule that is covalently bonded share electrons unequally
How does the movement of particles change when you heat something up?
The speed of the particles increases
Does the solute melt when it is dissolved?
No
Is oil polar or nonpolar?
Nonpolar
What kind of mixture is an alloy? (Such as steel or bronze?)
A solution/homogeneous mixture.
In an alloy, molecules are mixed evenly, creating a solid which appears to be a completely evenly mixed.
What is the difference between a particle and a molecule?
A molecule is a particle made out of atoms bonded together - particle is a term for any tiny piece of matter.
What happens when you cool a particle all the way down to having 0 heat?
The particle would stop moving completely.
Why does a liquid settle in the bottom of a container while a gas expands to fill the whole container?
The molecules in a liquid attract each other more strongly than those in a gas, so the gas particles fly around while the liquid stays together and is pulled to the bottom of the container by gravity.
How does a covalent bond work?
Two atoms share electrons.