objective final ’11

What is the system of measurement used in science?
metric
what word means the amount of matter an object has?
mass
what tool is used to measure mass?
a balance
matter is anything that has ____ and _______.
mass and volume
the amount of space an object takes up is its _______.
volume
Density is the ____ per unit ______.
mass, unit
The best way to find an irregularly shaped solid is
water displacement
how easily an substance moves
viscosity
all phase changes are….
physical changes
What are two liquids with high viscosity?
syrup and honey
What are three substances that sublime?
Snow, Iodine Crystal, Co2
What phase change is a solid becoming a liquid?
melting
What phase change is a liquid becoming a solid?
Freezing
What is the freezing point of h20?
0 degrees celcius
What is the melting point of h20?
0 celcius
What is the boiling point of h20?
100 celcius
What is the dew point of h20?
around 50 degrees celcius
When matter freezes, what happens to its energy?
energy decreases
When matter boils, what happens to its energy?
Energy increases
What is a physical change?
A change only in appearance.
What is a chemical change?
When a substance changes into a new substance
What kind of change is rising bread dough?
chemical
What kind of change is density?
physical change
What kind of change is volume?
physical change
What kind of change is rusting metal?
chemical change
What kind of change is melting?
chemical change
what kind of change is neutralization?
chemical change
What are two or more substances, in the same container, not chemically combined?
a mixture
What is it when one solution is completely dissolved in another?
solution
what are the simplest pure substances found on earth?
elements
What are pure substances made of more than one chemically combined element?
Compounds
What is the smallest particle of an element that has all the properties of that element?
Atom
What is the smallest particle of a compound that has all the properties of that compound?
molecule
What are the small numbers in formulas used to tell how many atoms are present?
Subscripts
What are combinations of elements used to represent compounds?
Formulas
What are substances that are made of more than one element that are chemically combined?
Compounds
What can compounds be broken into?
elements
What are combinations of elements used to represent compoundS?
Formulas
what type of observation is done w/o measurement?
qualitative
what type of obseravtion is done with measurement?
Quantitative
Three categories of matter?
solid liquid gas
what is a heterogenous mixture?
mixture that isn’t the same throughout
what is a homogenous mixture?
a mixture that is the same throughout
what is another name for a homogeneous mix?
a solution
what is an alloy? 3 examples please
an alloy is a solid solution with 2 parts examples are steel bronze brasz
What is a solute?
thing being dissolved
What is a substance?
matter with the same fixed composistion and properties
what are short hand abbreviations for element names?
symbols
x

Hi!
I'm Larry

Hi there, would you like to get such a paper? How about receiving a customized one?

Check it out