Vocabulary
Is a melting a popsicle an example of a physical change?
What is YES? You can melt and refreeze a popsicle and it will still be a popsicle.
This is a mixture in which the constituent particles are evenly distributed throughout.
What is HOMOGENOUS?
A pure substance may be classified as what two categories of matter?
What is an element or compound
This term describes how close to each other a series of measurements are.
What is PRECISION?
These are the characteristics of an object that you can observe without changing its chemical composition.
What are PHYSICAL PROPERTIES?
Is rusting a nail an example of a physical change?
What is NO? You cannot change rust back into the metal is was before; therefore, it is a chemical change.
This is a mixture in which the constituent particles are NOT evenly distributed throughout and may appear as multiple distinct phases.
What is HETEROGENOUS?
Name the 3 (or 4) states of matter.
What are SOLID, LIQUID, GAS?
This term describes how close a series of measurements are to the true value being measured.
What is ACCURACY
Name two indicators of a chemical change.
What are color change, gas bubbles, temperature change, precipitation, odor, light?
The air in this room is an example of what type of mixture?
What is HOMOGENOUS? There are multiple gases such as nitrogen, oxygen, carbon dioxide, and water vapor that are all blended together.
How many significant figures in 135,007,000?
What is SIX
Is dissolving sugar in water an example of a physical change?
What is YES? The sugar does not change chemically when it dissolves in water.
All of the elements that have been discovered can be found on what chart?
What is THE PERIODIC TABLE OF THE ELEMENTS?
This state of matter has an indefinite shape and volume.
What is a GAS?
What would the density of a rock be which has a volume of 30 mL and a mass of 90 g?
What is 3 g/mL
This type of matter has a definite shape and volume.
What is a SOLID?
This is the term for a solid that is formed from two aqueous solutions during a chemical reaction.
What is a PRECIPITATE?
This term refers to multiple different atoms which are chemically bonded together.
What is a COMPOUND?
Things like heat, light, and sound are not considered matter. What are they called instead?
What is ENERGY
How many centimeters would 2.35 meters equal?
What is 235 cm?