properties of matter
name three physical properties of matter
texture, phase, density, bouyancy, solubility, concentration, conductivity, magnetism ect...
The formula for density...
mass/ volume
A type of matter in which all the atoms are the same and they cannot be seperated any further.
element
Name the three phase of matter, in order by relative kinetic energy from least amount of energy to greatest.
solid, liquid, gas
What a substance is warmed up it is gaining _____________
kinetic or thermal energy
name three chemical properties of matter
combustability, oxidization, reactivity, rusting, tarnishing, flamability
If an object has a higher density, it will ___________. If it has a low density, it will ___________.
sink, float
A type of matter made of two or more different elements that are bonded together and consistent through out.
compound
Define each phase of matter in terms of energy, atomic bonds, and movement.
gas: high energy, bonds broken, moving ALOT
liquid: medium energy, bonds holding but weak, sliding past eachother
solid: low energy, bonds strong, atoms wiggle in place, but do not move around.
Heat is a measurement of energy, it is measured in __________
degrees celcius
Give an example of a physical and chemical change and explain the difference.
physical- still same substance
chemical- changes atoms to make new substance
Find the density of a substance with a mass of 22 g and volume of 12 mL
22 / 12 = 1.8
A type of matter in which two or more molecules are present, but are evenly distributed through out.
homogenous mixture or solution
Which phase change is when a gas changes directly to a solid.
deposition
conduction, convection, radiation
The statue of liberty is made of copper. Explain one way the copper was physically change and one way it was chemically change to look as it does today.
physical: bent and molded into statue
chemical: oxidization to turn green
Water has a density of 1 g/mL. Explain how these items will behave in water, given their density:
object A: 1.22 g/mL
object B: 1.001 g/mL
object c: 0.75 g/mL
A sinks, B will float midway, C floats
solute and solvent
examples vary
Name the 6 phase changes
freezing, melting, condensing, vaporization, sublimation, deposition
Describe what happens to the kinetic energy of particles as the phase change evaporation occurs
What is happening at the particle level when salt dissolves in water. Is this a chemical change or physical and why?
physical change, the salt and water molecules are still present and unchanged.
Explain how you find the density of an irregular object. What Law of science are you utilizing to do this?
The Law of Displacement, place the object in water and see how much water it displaces (how much the water goes up) to find the volume. Use this to calculate the density.
A type of matter in which there are at least two different types of substances and the molecules are not evenly distributed, but randomly mixed
heterogenous mixture
Draw each phase of matter at the molecular level
varies
What is a calorie? What is the equation for finding calories
Calories are the unit of measurement for heat energy, equation is Cal= Mass x change in temp