Unit 2 Chemistry!!!

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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


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