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physical and chemica

6TH grade science

questionanswer
physical change involves changes in what? state
what 4 sates can a material be? gas, liquid, solid, plasma
how can you determine if a physical change has taken place changes form or shape
what happens when something undergos a chemical change? it turns into another material
what happens to gas during a chemical change? it is either given off or taken in
signs of chemical change are ___ or ____ realeasing water or giving off gas
changes in shape, color or texture are examples of physical change
when a substance is turned into a whole new substance chemical change
tells you the relationship between an object's mass and the space it takes up density
what are the physical properties of a base? bitter taste and slippery feel
physical change involves changes in what? acid state
what 4 sates can a material be? gas, liquid, solid, plasma
how can you determine if a physical change has taken place changes form or shape
what happens when something undergos a chemical change? it turns into another material
what happens to gas during a chemical change? it is either given off or taken in
signs of chemical change are ___ or ____ realeasing water or giving off gas
changes in shape, color or texture are examples of physical change
when a substance is turned into a whole new substance chemical change
tells you the relationship between an object's mass and the space it takes up density
what are the physical properties of a base? bitter taste and slippery feel
T or F, a food that tastes sour is likely to contain a base false
T or F a PH of 4 is less acidic than a Ph of6 false
T or F odor is an example of physical property true
cracks in the sidewalk in winter are a result of physical change true
a newspaper turning yellow after being left in the sun is evidence of what kind of change chemical
ice melting, glass breaking, mowing the lawn are examples of physical change
at extremely high temperatures (like in the stars) matter is most likely to exist in this state plasma
all acids have a Ph of? less than 7
all bases are slippery to the touch
is a change in state a sign of chemical change? no
if dry ice is left at room temperature, acarbon dioxide vapor forms. carbon dioxide is changing from what state to what state solid to gas
if you wanted to lower the ph of a water solution, would you add ammonia, salt, water, or lemon juice lemon juice
a substance with a PH of 4 is classified as acid
a substance that registers 10 on the PH scale is classified as base
the evaporation of water is an example of a change in physical STATE
measures how acidic or basic a substance is PH scale
why is it safe to eat salt, which is made from sodium (burns in water) and chlorine (a posonous gas) because when they are combine they are stable and have different properties than their separate components
what is the fifth state of matter BEC
what is the real name of BEC bose-einstien condensate
at what temperature would you find a state of BEC ABSOLUTE ZERO
Which is easier to compress, liquids or gasses? gasses
when a liquid changes to a gas, the process is called _______ evaporation
which state of matter is present in neon signs? gas
Created by: victisha