Matter Map
In the matter concept map, the top box is this word.
What is MATTER
A particle picture shows dots close together in neat rows. Name the state.
What is Solid
Use the phase-change arrow diagram: solid → liquid.
What is Melting
On a phase diagram, this axis is usually on the bottom.
What is Temperature
A bowl contains cereal and milk. What method can separate the solid cereal from the liquid milk?
What is Filtration or straining
Write the density formula.
What is D = M ÷ V
A pure substance branches into an element and this category.
What is a Compound
A particle picture shows dots close together but able to slide past each other. Name the state.
What is liquid
Use the phase-change arrow diagram: gas → liquid.
What is Condensation
On a phase diagram, this axis is usually on the side.
What is Pressure
A mixture contains sand and small pebbles. What method separates the larger pebbles from the smaller sand particles?
What is Sieving or Screening
A sample has 500 g mass and 315 mL volume. Find density.
What is 1.59 g/mL
A mixture branches into Homogeneous Mixture and this category.
What is a Heterogeneous Mixture
A particle picture shows dots far apart. Name the state.
What is Gas
Use the phase-change arrow diagram: liquid → gas.
What is Vaporization
On a phase diagram, the point where all three phase boundaries meet is called this.
What is Triple point
A mixture contains iron filings and sand. What tool or method separates the iron filings from the sand?
What is a magnet
Copper has 8.94 g/mL density and a 34 g mass. Find volume.
What is 3.80 mL
Use the concept map: Gold (Au) belongs under Pure Substance and this category.
What is an Element
In a liquid-to-gas particle diagram, name two changes in the particles.
What is They move faster, spread farther apart, and gain energy
Use the phase-change arrow diagram: solid → gas.
What is Sublimation
If temperature stays the same and pressure decreases, move in this direction on the graph.
What is Down
A saltwater solution is left in a shallow dish until all the water is gone. Salt crystals remain. What process occurred?
What is Evaporation
The class density table lists copper as about 8.94 g/mL. Is a 1.59 g/mL unknown pure copper?
What is NO
Use the concept map: Pulp-free orange juice belongs under Mixture and this category.
What is a Homogeneous Mixture
Draw or describe the particle arrangement for a solid.
Particles are close together in an orderly pattern and vibrate in place
Use the phase-change arrow diagram: gas → solid.
A point crosses from the liquid region to the gas region. Name the phase change.
What is Vaporization
A solution contains dissolved sugar in water. A student needs to collect the water, not just the sugar. What process heats the solution and collects the condensed water vapor?
What is Distillation
A line on a mass-volume graph goes through 2 mL, 5.2 g and 4 mL, 10.4 g. Find the density.
A phase diagram point is at 50 °C and 1 atm in the liquid region. Temperature stays at 50 °C, but pressure decreases until the point enters the gas region. State what happened and explain how the diagram supports your answer.
The substance vaporized (liquid → gas). Keeping temperature the same and decreasing pressure means moving down on the phase diagram; the point crosses from the liquid region into the gas region.