what is matter? matter is anything that takes up space and has mass. what is inertia? the tendency...
TRANSCRIPT
What is matter?Matter is anything that takes up space and has
mass.What is inertia?
The tendency to continue…Everything which has inertia is matter. Because
trucks have inertia, it is a bad idea to cut in front of a moving truck.
Wats de madder?
There are three major states of matter.
• Solid
• Liquid
• Gas
Matter can be homogeneous or heterogeneous
The same throughout
In more than onePhaseDifferent in one placeThan in another.
What types of thing make up matter?
Matter
homogeneous
Elements
Mixtures
of elements, compoun
ds, or both.
These are often called solutions
compounds
heterogeneous
mixtures
ElementsWrite names and symbols1. H2. He3. Li4. Na5. Ne6. K7. P8. Ca9. Cl
Check your work1. H = hydrogen2. He = helium3. Li = lithium4. Na = sodium5. Ne = neon6. K = potassium7. P = phosphorous8. Ca = calcium9. Cl = chlorine
Compounds
WaterEthanolSaltBaking soda
Solutions – homogeneous mixtures
• These are usually aqueous solutions, but can include mixtures of gases or alloys like steel. (Steel contains Fe and C, but may contain other metals as well, Ni is used to make stainless steel).
• Air is a mixture of gases. Since the particles are distributed evenly, it is a homogeneous mixture. (Air is mainly N2, but contains about 20% O2, and other gases like CO2 and other pollutants.
• Salt water appears to have one phase, even though it has two compounds in it (water and sodium chloride).
• Tincture of iodine is a substance your parents or grandparents may remember from their childhood. It is a homogenous solution of Iodine (I2) and alcohol (CH3CH2OH).
Heterogeneous mixtures
More than one phase.
QuizHow would you classify the following?
1. Chicken soup?2. Helium? (He)3. Carbon Dioxide? (CO2)
4. Salt Water? (NaCl (aq) )5. Stainless steel?6. Air7. Nitrogen gas (N2 (g) )
What do Chemists Do?Analytical Chemist•CSI - What was the white powder found at the crime scene •Test pharmaceuticals , food and drink to ensure they meet quality and safety standards.
Biochemist•Studies biological molecules, may be involved in research to find causes and cures for disease.
Organic Chemist•Studies carbon-based chemistry. (graphic is turquoise dye)•Finds new dyes, plastics, solvents,…
Physical Chemist studies behavior of systems. ex. Probability clouds for electronsBehavior of gases
Inorganic ChemistStudy chemical reactions involving non-carbon compounds