Scientific Method
The first step of the scientific method is to make an __________________________ or ask a question.
OBSERVATION
A mixture containing particles that are larger than those in a solution but do not settle quickly is called a __________________________.
COLLOID
Density is the amount of __________________________ contained in a given volume.
MASS
A solid has a definite shape and definite __________________________.
VOLUME
A characteristic of a substance that can be observed or measured without changing the substance is called a __________________________ property.
PHYSICAL
A possible explanation that can be tested is called a __________________________.
HYPOTHESIS
An element or compound is an example of a __________________________
PURE
If an object has a mass of 40 grams and a volume of 10 milliliters, its density is __________________________ g/mL.
4 g/mL
When matter is cooled, its particles generally move __________________________.
SLOWER
Flammability and the ability to react with acid are examples of __________________________ properties.
CHEMICAL
The variable that a scientist purposely changes is called the __________________________ variable.
INDEPENDENT
Two or more substances physically combined form a __________________________.
MIXTURE
Mass is commonly measured in __________________________ or kilograms.
GRAMS
Particles in a solid mainly __________________________ in place.
VIBRATE
When ice melts, the ice changes from a solid to a __________________________, making this a physical change.
LIQUID
The variable that is measured or observed during an experiment is called the __________________________ variable.
DEPENDENT
A mixture containing particles that may settle to the bottom is called a __________________________.
SUSPENSION
An object with a density greater than water will generally __________________________ in water.
SINK
Particles in a liquid are close together but can __________________________ past one another.
SLIDE/MOVE
The formation of a gas, production of a precipitate, or unexpected color change can be evidence of a __________________________ change.
CHEMICAL
Information collected during an experiment is called __________________________.
DATA
A mixture that has the same composition throughout is called a __________________________ mixture.
HOMOGENEOUS
An instrument commonly used to measure liquid volume is a __________________________ cylinder.
GRADUATED
Particles in a gas are generally __________________________ apart and move freely.
FARTHER
Melting, freezing, cutting, and crushing are examples of __________________________ changes.
PHYSICAL