Levi (Sugarbear)
What contains mass and takes up space?
Matter
A distinct group of two or more atoms bonded together.
What is a pure substance?
A material made up of only one kind of element or compound.
What are the TWO kinds of mixtures?
Homogenous and Heterogenous Mixtures
What is a mixture?
A physical combination of two or more substances at varying ratios.
What did the "atomists" advocate for or believe matter was?
They believed that all matter was made of indestructible parts called atoms and there was nothing between them (void).
What is the mathematical relationship between Mass, Volume, and Density?
Density is equal to Mass divided Volume
D = M/V
What is an element?
A pure substance that contains atoms of the same atomic number.
What do you call the geometric pattern formed from molecules combining?
A Crystal Lattice
What are the FOUR states of matter we covered in class?
Solids, Liquids, Gases, and Plasmas
What is Brownian Motion?
The erratic and random movement of particles suspended in a liquid
What is "weight?
The measure of gravitational forces acting upon the matter in an object.
What is the difference between Mass and Weight?
What is a Physical Property?
Any aspect of an object that can observed or measured without changing the chemical composition.
What is a Chemical Property?
How a substance changes when in the presence of another substance or under certain conditions.
Why is the Particle Model of Matter also called the "Kinetic Model of Matter"?
Because all physical matter is made up of particles that are in constant motion.
What is the difference between a PHYSICAL and a CHEMICAL change?
Physical~ any change that does not alter the chemical identity
Chemical~changes that alter the chemical identity
What is Conductivity?
It is the measure of how well a material transports an electrical charge or thermal energy (heat).
What TWO things determines a material's state of matter?
1. The amount of kinetic energy
2. The attractive forces between the particles
What does it mean for a material to have a high degree of "compressibility"?
The material's volume easily shrinks as it is pushed or squeezed together.
There are SIX changes of the State of Matter; NAME all of them and describe what happens.
Melting ~ Solid to liquid
Freezing ~ Liquid to Solid
Vaporization ~ Liquid to Gas
Condensation ~ Gas to Liquid
Sublimation ~ Solid to Gas
Deposition ~ Gas to Solid
Draw a HIEARCHY Chart (diagram) of Matter using arrows and the following terms:
PURE SUBSTANCE, MIXTURE, ELEMENT, HOMOGENOUS MIXTURE, COMPOUND, and HETEROGENOUS MIXTURE.
Matter
Pure Substance Mixture
Element Homogeneous Mixture
Compound Heterogeneous Mixture
What is the difference between MALLEABILITY and DUCTILITY? HINT: think of the kinds of forces or stress acting on the object
DUCTILITY is a material's ability to deform or bend without breaking due to TENSILE STRESS and MALLEABILITY is the ability to deform or bend without breaking due to COMPRESSIVE STRESS.
A cube has a side length of 8 cm and has a mass of 1536 grams. What is the Density of the cube in g/cm^3?
HINT: Volume of a cube is s^3
D = M/V -----------> D = 1536/(8^3) ----> 1536/512
= 3 g/cm^3
What is a PHASE DIAGRAM and a TRIPLE POINT?
It shows the different states of matter based on the levels of PRESSURE and TEMPERATURE.
Shows when all three states of matter exist in equilibrium.