Counting atoms day 2b

You Will Need:1. 2nd page of Counting Atoms +

Density Review - Bookshelf2. STAR CARDS #31-60 – Due at

the beginnig of the period on Friday

3. Log #3 – Update with points

Remember you have new SEATS!!!!!

You Will Need:1. STAR CARDS #31-60 – Due at

the beginnig of the period on Friday

2. Quiz on Cards 31-60 only on Friday – Final Quiz will be cumulative

3. Log #3 – Update with points

1. What type of substances have different characteristics than the components that make them up?

2. All elements are made up of what basic particle?

3. The smallest particle of a compound is?4. Atoms can only be separated into their

subatomic particles only by ?5. When you have two or more different

atoms bonded together, we call this a ______________.

6. Elements, Compounds and Mixtures…which are PURE? Why?

7. What is the maximum # of electrons the 2nd shell in the Bohr model hold?

8. Two or more substances physically blended make up a(n) ____________.

9. Why are mixtures “NOT PURE”.10. What ist he difference between

heterogeneous and homogeneous?11.Elements, Compounds and Mixtures…

which have a SET RATIO?12.A taco is considered a heterogeneous

mixture….Why?

13.Give an example of a homogeneous mixture.

14. How can you identify the solvet in a solution?

15.

Mixture of Elements

16.

16.

Mixture of Elements and Compound

17.

17.

Element

18. A substance composed of particles evenly distributed to look like one substance is homogeneous. This substance is also known as a ___________.

19. In 100 grams of water at 70 degrees Celsius, NaCl will dissolve 30 grams. If I pour in 40 grams will the solution be unsaturated, saturated or supersatureated?

20.In a solution of Kool-Aide and water what is the solute? Why?

21. List two forces/factors will change the saturation level of substances?

22. Element, Compound, Mixture – which can be mae up of atoms and molecules?

As you look over these compounds you may observe that many of them contain similar _________ of elements. Since we are a ______________ based environment, carbon is found in all living organisms. The elements in the Human Body can be broken down to include the main elements of Hydrogen, Oxygen, Nitrogen, Carbon and representatives from about 20 other elements.

atomscarbon

The _________ main elements that make up most living organisms are Carbon, ________________, Sulfur, __________________, Oxygen and _____________.

Phosphorus

SIX

HydrogenNitrogen

Practice and Review

Mass Unit Label = ___________

Volume Unit Label = _______,

________, ________

Density Unit Label = __________,

__________, __________

Gram

cm3

mL cc

g/cm3

g/mL g/cc

Density Formulas

1)There are 3 versions of the Density formula:

D=m/v v= m/D

m= v x D

1. Counting Atoms – 2 pages 4 sides – Due tomorrow at the beginning of class

2. STAR Cards 31-60 – Due on Friday at the beginning of class.