Name the parts of an atom, their charges, and their location.

What two particles make up atomic mass? What charge does each carry?

What is the difference between an atom and a molecule? Which of the following is a molecule of a compound: H2 , NaCl, Cu, or C?

Draw an atom on the board with more atomic mass than an atom of Helium.

One atom has 5 protons and 5 neutrons. Another atom has 5 protons and 7 neutrons. What element do both of these atoms represent, and why do they have different numbers of neutrons?

What is the difference between a compound and a mixture?

You dissolve 8 grams of sugar into 90 mL of water. If you evaporate 30 mL of the water, will the solution be an element, a compound, or a mixture? Explain.

What is the most reactive group and the least reactive group on the periodic table, and why?

Go to the board and draw a molecular picture of an element, a compound, and a mixture. Explain the differences.

Salt (NaCl) is a compound. Water (H2O) is a compound. When the two are mixed together, the salt will dissolve in the water. Will they form a compound or a mixture? How do you know and what might you do to try to separate these?

What is another name for evaporation? Is it a physical or chemical change?

When you add more and more heat to gas particles, what happens?

Do particles become more ordered with added heat or removal of heat? Explain and give an example.

How does Kinetic Theory relate to temperature?

Describe the movement of particles in liquid water, in ice, and in steam.

Aluminum foil represents a metal. Name at least 3 of its physical properties?

What is the difference between a chemical change and a physical change?

Using your periodic table, locate and classify Nitrogen, Bromine, Flourine, and Carbon based on a similar physical property.

Pretend you are performing an experiment, mixing two chemicals without adding heat. Suddenly, the container holding the two chemicals gets very hot. Was this a chemical or physical change? Explain your answer.

Name 5 things you might notice when you see a chemical change occurring.

What is the difference between an open system and a closed system?

In the closed system experiment, you took a starting mass with all of your reactants before chemically combining them. If no gas escaped and there was no error, how should your total starting mass have compared to your total ending mass?

How does a balanced chemical equation represent the Law of Conservation of Matter?

If you add 30g of Element A to 42g of element B, how many grams of matter will be in your final product? Explain how you found your answer.

Two groups started an experiment with 20g of antacid tablets, 23g of a ziplock bag, and 50g of water. Group 1 ended up with a final mass of 90g. Group 2 ended up with a final mass of 92.9g. Which group had more accurate results? Explain your reasoning.

Protons - Positive (nucleus) Neutrons - Neutral (nucleus) Electrons - Negative (electron shell/orbital)

Protons and Neutrons - Positive and Neutral

Molecules are made up of multiple atoms; NaCl

Answers vary

Boron; They are isotopes

Compounds are held together by forces called chemical bond and cannot be separated by physical means. Mixtures can be separated by physical means.

The solution will be a mixture. You only took away a portion of the water, but the two compounds are still not chemically combined. You could still separate the water and sugar by physical means.

most- Group 1- only one electron in outer shell; wants to give away. Least-Noble Gases; full electron shell, so stable and happy

Picture varies. Description: Elements have only one type of atom; Compounds are two or more different types of atoms that are chemically bonded; Mixtures are different types of atoms or molecules that are not chemically bonded. They can be physically separated.

They will form a mixture. Dissolving is a physical change. We could boil the water completely off and still have salt. The substances are not changed, only physically combined.

Vaporization; Physical because it is just a change in state. No new substance is formed.

Ionization: The charged particles in the atom break apart and move freely from one another; they change from gas to plasma

Particles are more ordered when you remove heat because they have less energy to move about freely. Examples will vary.

Kinetic Theory tells us about the movement or behavior of particles. Temperature relates, because the more heat you add, the faster particles move. The more heat you remove, the slower particles move.

In liquid water, particles are close together but able to move past each other. In ice, the particles are very close together and only vibrate in place. In steam, the particles are far apart and moving fast and freely.

Shiny (luster), malleable, conducts electricity, ductile, etc

All are nonmetals, occurring in the state of gases.

This would be a chemical change, because the reaction released the heat. We did not add the heat, it was produces by the reactants.

Bubbling, Color Change, Smoke, New Substance, Precipitate (solid forming in liquid) (answers may vary)

An open system is not contained. The gas particles can escape. A closed system will not allow any gas to escape.

It should have been exactly the same.

In a balanced chemical equation, there is the same number of atoms of each element in the reactants as there are in the products. This shows the Law of Conservation of Matter, because no mass was gained or lost. We ended up with the same amount of matter that we started with.

30g + 42g = 72g of product. No matter should be lost or gained in the reaction, so we can add the mass of the two reactants to find the mass of our final product.

The Law of Conservation of Matter tells us we should start and end with the same amount of matter. If both groups started with the same mass of supplies and ingredients (20g+23g+50g=93g), the group with the ending mass closer to 93g would be more accurate, because no matter should be lost or gained. In conclusion, Group 2 had more accurate results.