Periodic Table
Dull and Brittle
Non-metals
Increasing volume while keeping your mass the same will result in .... (think about the dead man's float when swimming)
Less Density; more likely to float.
When I make Kool-Aid, I am making a physical or chemical change?
Physical
List the states of matter from lowest Kinetic Energy to highest.
Solid-->liquid-->gas
Salt and water is a ___________ solution
Homogenous
Metals are shiny, or have _________.
Luster
Decreasing volume, while keeping the same mass will end up......... (Think of a cherry bomb when swimming)
more density, most likely to sink.
Unexpected color and/or formation of a precipitate is evidence of a ________________.
Chemical reaction
T OR F: Particles in a liquid are fixed
False, particle in a liquid have mid K.E. and move and slide around each other.
A cup of sand and iron fillings is a ___________ mixture.
Heterogenous
Metals can be bent or shaped easily, because they are ______________.
Malleable
The density of an object that has a mass of 48g and volume of 40 cm3
DENSITY=MASS/VOLUME
1.2 g/cm3
Cutting paper, dissolving salt in water, and water freezing are examples of....
Physical changes
Particles in this state of matter are uniform, fixed, with a definite volume, and definite shape.
Solid
Same composition throughout______________.
(Homogenous or heterogenous)
Homogenous
Metals are ductile, which means....
They can be drawn into a wire.
If honey has a density of 1.4 g/cm3 and my marble has a density of 1.5g/cm3 , what will the marble do when I drop it into honey and why.
Sink, because it is more dense than the honey.
If I cannot turn it back into its original form, it underwent a _______________ change.
Chemical
___________ and __________ have a definite volume, but ________ do not.
Liquid & solids ; gases do not
T or F: I can separate a heterogenous mixture and a homogenous mixture.
T; I cannot separate a pure substance
This group makes a stair case shape on the periodic table and are known as semiconductors or fair conductors of heat and electricity.
Metalloids
T OR F: You measure the volume of gas.
True!
A new substance formed from a chemical reaction.
Precipitate
This state of matter has an indefinite volume and indefinite shape.
Gas
An element or a compound that has specific properties; it always has the same properties.
Pure substance