Misc
Alka Seltzer's produce what evidence of what chemical change
production of a gas
Substance made of only one kind of atom
element
99% of all matter in the universe that can be observed is
plasma
Which is not a physical change
production of gas, conductivity, density, or hardness
production of gas
Rust appears on a steel pipe. Explain
Pipe comes in contact with moist air which has oxygen and water
which has the lowest vicosity
corn syrup, oil, alcohol, water
alcohol,
Mixture that appears to contain only one type of substance because the substances are so evenly distributed you can’t tell them apart
homogenous mixture
Matter that takes the shape and volume of the container
gas
sugar is put in water to create a solution. Sugar is the
solute
Phase that a solid changes directly into a gas without changing into a liquid
Sublimation
an example of a shiny, good conductors of heat and electric currents, solids at room temperature except for mercury, that can be flattened into sheets or formed into thin wires is called a
metal
Scratch testing determines
hardness
Matter that has definite shape and definite volume
Solid
If a subastance is flammable, what can it do?
Burn in the presence of oxygen
Two items that are the same size and shape. One density is higher than the other. How can you determine what block is what based on the densities by doing an experiment
Block with higher density will sink in water with lower density. Lower density will float
Diffusion happens the fastest in solids, liquids, or gases
gases
a liquid's ability to resist flowing
Viscosity
Forces of attraction limit the motion of particles most in
Solid
Physical changes can change what 3 things
size, volume, shape, compsisiton
size, volume, shape
Phase that a gas changes to a solid without changing to a liquid
deposition
characteristics that describe how one kind of matter is different from another
properties
what is the formula for mass using mass, density and volume
mass=density x volume
Chalk is a or an
element, compound, homogenous mixture, heterogenous mixture
ompound it is made of calcium carbonate
A nurse comes to put two medications in your IV bag. After she pushes the second drug you notice white solids in in your IV line called a precipitate. Has a physical or chemical change occurred?
chemical
Which state of matter has the most kinetic energy
gas