Chemistry Basics Group Review

Directions: Your group will work together using any resources available in the room to answer the questions below. (Note: I would highly suggest using the blue matter books as one of those resources…but it’s up to you!…good luck with your decision)

Rules:

  1. You must get your answers checked for each section BEFORE moving on to the next section!
  2. All sections must be done to perfection before moving on to the next section!
  3. All group members need to come get answers checked
  4. All group members must be able to explain HOW you got your answer if asked…we are shooting for all to understand the material! 
  5. All group members must fill out their own sheets with the correct answers (this will become notes)

The Challenge:

  1. Be the first team to complete all sections of the review sheet. The reward for this is ______
  2. Have the whole class complete all sections of the review sheet. The reward for this is ______

Good Luck with your challenge!

What are 4 main properties of matter?

What is matter?

What is the difference between mass and weight?

What are the 4 states of matter?

****************************STOP – GO CHECK YOUR WORK ******************************

Chemical and Physical Change

For each of the following, determine whether a chemical or physical change is taking place:

1)A hot dog is cooked
  • Chemical or physical change?
  • Your reason:
/ 2)Thousand Island dressing and mayonnaise are mixed to make “secret sauce” for hamburgers
  • Chemical or physical change?
  • Your reason:

3)Water is boiled in preparation for making pasta
  • Chemical or physical change?
  • Your reason:
/ 4)Old ham goes bad in the refrigerator
  • Chemical or physical change?
  • Your reason:

5)A rock star gets a tattoo on his forehead
  • Chemical or physical change?
  • Your reason:
/ 6)Leaves changing color in the fall
  • Chemical or physical change?
  • Your reason:

What are 2 pieces of evidence that would support if a chemical change has occurred?

****************************STOP – GO CHECK YOUR WORK ******************************

Identify each of the following as a Physical or Chemical Change.

Put a P next to Physical Changes Put a C next to Chemical Changes

1. A piece of wood burns to form ash. ______2. Water evaporates into steam. ______

3. A piece of cork is cut in half. ______4. A bicycle chain rusts. ______

5. Food is digested in the stomach. ______6. Water is absorbed by a paper towel. ______

7. Hydrochloric Acid reacts with zinc. ______8. A piece of an apple rots on the ground. ______

9. A tire is inflated with air. ______10. Sugar dissolves in water. ______

11. A plant turns sunlight, CO2, and waterinto sugar and oxygen. ______

12. Eggs turn into an omelette. ______13. Milk sours. ______

14. A popsicle melts. ______15. Turning brownie mix into brownies. ______

****************************STOP – GO CHECK YOUR WORK ******************************

Chemistry-Atomic Structure

1.The 3 particles of the atom are:Their respective charges are:

a.______a.______

b.______b.______

c.______c.______

2.The number of protons in one atom of an element determines the atom’s

______,and the number of electrons determines

______of an element.

3.The atomic number tells you the number of ______in one atom of an element. It also tells you the number of ______in a neutral atom of that element. The atomic number gives the “identity “ of an element as well as its location on the

Periodic Table. No two different elements will have the ______atomic number.

4.The ______of an element is the average mass of an element ’s naturally occurring atom, or isotopes, taking into account the ______of each isotope.

5.The ______of an element is the total number of protons and neutrons in the______of the atom.

6.The mass number is used to calculate the number of ______in one atom of an element. In order to calculate the number of neutrons you must subtract the ______from the ______.

****************************STOP – GO CHECK YOUR WORK ******************************

Draw a boron atom in the space provided (be sure to include all protons, electrons, and neutrons in their appropriate spots).

7.Give the symbol and number of protons in one atom of:

Lithium ______Bromine ______

Iron ______Copper ______

Oxygen ______Mercury ______

Krypton ______Helium ______

8.Give the symbol and number of electrons in a neutral atom of:

Uranium ______Chlorine ______

Boron ______Iodine ______

Antimony ______Xenon ______

****************************STOP – GO CHECK YOUR WORK ******************************

9.Give the symbol and number of neutrons in one atom of:

(To get “mass number ”,you must round the “atomic mass ” to the nearest whole number)) Show your calculations.

Barium ______Bismuth ______

Carbon ______Hydrogen ______

Fluorine ______Magnesium ______

Europium ______Mercury ______

10.Name the element which has the following numbers of particles:

a.26 electrons,29 neutrons,26 protons ______

b.53 protons,74 neutrons ______

c.2 electrons (neutral atoms)______

d.20 protons ______

e.86 electrons,125 neutrons,82 protons (charged atom) ______

11 .If you knewonly the following information could you properlyidentify the element?

a. number of protons ______b.number of neutrons______

c.number of electrons in a neutral atom______d.number of electrons______

Directions: Put the number of the definition from the list below into the square with the appropriate term. Check your answers by adding the numbers to see if all the sums of all rows, both across and down add up to the same number, the Magic #.

Democritus
_____ / Dalton
_____ / Thomson
_____ / Chadwick
______/ Total
_____
Rutherford
_____ / Proton
_____ / Atom
_____ / Bohr
_____ / _____
Wave Model
_____ / Neutron
_____ / Nucleus
_____ / Alpha particle
_____ / _____
Electron
_____ / Model
______/ Energy levels
_____ / Electron cloud
_____ / _____
Total _____ / _____ / _____ / ______

Magic Number ______

1.Represented by a symbol; all are found on the Periodic Table

2.Made a mental model of the atom; Greek philosopher

3.Used by Rutherford in his experiment; made of two protons and two neutrons

4.The paths in which electrons circle the nucleus according to the Bohr model

5.The positive particle in the nucleus of an atom

6.The tiny positive core of an atom; contains protons and neutrons

7.Formed the atomic theory model of the atom; English schoolteacher

8.Discovered the nucleus using his gold foil experiment

9.Current explanation of where electrons might be found in the atom

10.Used by scientists to explain something we can not see or understand

11.The smallest particle of an element that has the properties of that element

12.Discovered the neutron

13.Current model of the atom; proposed by Schrodinger

14.Mass of protons and neutrons

15.Developed the model of the atom in which electrons orbit the nucleus in energy levels

16.The negative particle that circles the nucleus

17.The neutral particle in the nucleus of an atom

18.Proposed the “plum-pudding” model of the atom; discovered the electron

Next Year Add

1)Scientist who organized the elements into the periodic table chart

2)What is an isotope?

3)How atoms become charged (add or subtract electrons ONLY)

4)Reading an element symbol

5)??? others ???