MYSTERY SOLIDS & LIQUIDS
GOOD GRAPHS
HYPOTHESIS, LAW, OR THEORY?
DENSITY DETECTIVES
PURE SUBSTANCE vs MIXTURE
100

This property compares an object’s mass to its volume.

What is density?

100

Every graph needs these three parts: a title, labeled axes, and this additional component that shows what the data means.

What is a scale with units?

100

A testable explanation for an observation, like you guess about falling objects, is called this.

What is a hypothesis?

100

Density is calculated using this formula.

What is mass ÷ volume?

100

A substance that has only one type of particle and a fixed composition is called this.

What is a pure substance?

200

You use this method to find the volume of an irregularly shaped solid like the mystery cylinder.

What is water displacement?

200

When you plot data, this variable always goes on the x-axis.

What is the independent variable?

200

A description of a consistent pattern in nature that can be written mathematically is known as this.

What is a scientific law?

200

When an object sinks, this is true about its density compared to water.

What is greater than 1.0 g/mL?

200

This is a physical blend of two or more substances that can be separated by physical means.

What is a mixture?

300

A liquid has a mass of 107 g and a volume of 100 mL. Its density is approximately this.

What is 1.07 g/mL?

300

If you’re comparing the density of substances, this should go on the y-axis.

What is density (g/mL)?

300

A broad explanation supported by many lines of evidence, such as plate tectonics, is this.

What is a theory?

300

An object with a density of 0.92 g/mL will do this when placed in water.

What is float slightly below the surface?

300

Salt water is an example of this type of mixture because it looks uniform throughout.

What is a homogeneous mixture (solution)?  

400

This property determines whether an object floats or sinks in water.

What is density compared to water’s density (1.0 g/mL)?

400

A student creates a graph with uneven spacing between numbers. The teacher says, “Fix your ___.”

What is your scale?

400

“The force between two charged objects depends on charge size and distance” is an example of this.

What is a law?

400

If two different substances have the same volume but different masses, the heavier one has this.

What is a higher density?

400

A salad with lettuce, tomatoes, and cucumbers is this type of mixture because you can see the different parts.

What is a heterogeneous mixture?

500

Gold has a density of 19.32 g/cm³ and will do this when placed in water.  

What is sink immediately to the bottom?

500

When analyzing a graph, you can describe the trend by noting whether the data points show this type of relationship between variables.

What is a positive, negative, or no correlation?

500

“Earth’s continents move slowly due to mantle convection” best represents this scientific idea.

What is the Theory of Plate Tectonics?

500

In the lab, students graph the density of various substances. The variable on the x-axis should be this.

What is the name of the substance (material)?

500

Elements and compounds are both examples of these.

What are pure substances?