Unit 2 Chemistry!!!
which of the following is a possible density for liquid B
1.07
one difference between a mixture and a compound is that...
a compound can only be separated by chemical means
which of the following is a chemical property of the caustic chemical sodium hydroxide?
ability to neutralize acid
which of the following is a chemical change
burning wood
which of the following is not evidence of a chemical reaction
change in state
which of the following is not a way to separate mixtures
combustion
a golf ball has more mass than a tennis ball because it
contains more matter
a chemical change occurs when a piece of wood...
decays
during a lab, you take a liquid sample and find its volume using a graduated cylinder and its mass using a digital balance you then use that info to calculate the density of the liquid, which of the following is an intensive property form the lab
density
which property could most successfully be used to determine the identity of each
density
which of the following is not a mixture?
iron
wile working at your lab station, you observe a shiny, silvery metal that is about the size of a quarter that melts when you pick it up. Which of the following is an extensive property of the substance
its size
which state of matter has definite volume and takes the shape of its container
liquid
which of the following is a chemical property
reactivity with oxygen
all of the following are physical changes to a metal EXCEPT
rusting
which is a homogeneous mixture
saltwater
which is a heterogeneous mixture
soil
which of the following would be considered a vapor
steam
during a lab some of your clothes catch on fire the correct response would be to
stop drop and roll
silver is a
substance
water is a
substance
what is true about the original chemicals before a reaction and the products after
the masses will be the same
what must occur for a process to be a chemical reaction?
the process must involve change in chemical composition
which of the following is not a physical property of water?
you can use electricity to break it into hydrogen and oxygen gas
When diluting an acid which of the following statements is true?
you should always pour the acid into water
the original clear liquid was?
homogeneous mixture
what is the density of the mystery solid?
0.51
which of the following is a physical change
evaporation
all of the following are physical properties EXCEPT
explosiveness
a substance that forms a vapor is generally NOT what state at room temperature
gas
matter is anything that
has mass and takes up space
based on this information the cough medicine would be classified as..
heterogeneous mixture
taco salad is a
heterogeneous mixture
sugar-water is a ....
homogeneous mixture