When a mixture's particles are NOT evenly distributed, or it has a variable composition
Heterogenous
Matter is ____________.
Anything with mass and volume
When a liquid changes to a solid, how does the amount of energy that the particles have change?
The particles have less energy when they are a solid
A pure substance that is only made up of one type of atom
Element
Is sweat evaporating off skin a physical or chemical change?
Physical
Label the four boxes (go left to right, then down) as element, compound or mixture
Element
Mixture
Compound
Compound
At this temperature Celsius water begins to freeze (turn from a liquid to a solid).
0 degrees celsius.
Is a apple decomposing in a compost bin a physical or chemical change?
Chemical
A glass of water can be described as these two things
Homogeneous mixture and pure substance
A mixture in which the particles are spread out evenly throughout is known as ______________.
Homogenous
List the three phases from closest together particles to most spread out
Solid, Liquid, Gas
When a liquid becomes a gas.
Evaporation
The measure of how fast particles are moving in matter is ________
Temperature.
In our separation of a mixture lab, the NaCl dissolved in the salt water created a _______________ mixture. The ability to dissolve in water (solubility) is know as a ______________ property.
Homogenous
Physical
There is a fourth state of matter that conducts electricity really well (which is a physical property!), this state is known as _________.
Plasma
When a solid changes directly to a gas
Sublimation
When a gas turns to a liquid it forms droplets on cold surfaces. This is known as
Condensation
2 or more atoms bonded together
Molecule
A substance that only contains one type of particle
Pure Substance