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Class Starter. Page 3 in your notebook is where you will begin the Class Starters. Title your page Class Starters and todays date (or CS 8/27/14). Write the question and answer it OR use a complete sentence to answer the questions. What safety equipment do we have in our room?
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Class Starter Page 3 in your notebook is where you will begin the Class Starters. Title your page Class Starters and todays date (or CS 8/27/14). Write the question and answer it OR use a complete sentence to answer the questions. What safety equipment do we have in our room? What will you have for homework every week in science? Who has to sign your Science Safety Contract? What is my web page address? In your own words, list three science safety rules.
Put on page 3 under yesterdays CS! Class Starter 5. You have been instructed to weigh a beaker of water. Your results are found below. How much does the beaker weigh? • 4. How much liquid is in this graduated cylinder?
Class Starter Put today’s CS on page 3 under yesterdays CS! • Correct and re-write these “If…then…because” hypothesis. • 1. If you get at least 7 hours of sleep, then you will do better on tests because you will have eaten a healthy breakfast. • 2. If you drop a ball, nothing will happen. • 3. If you drink coffee before going to bed, then you will fall asleep quickly because caffeine has no affect on sleep patterns. • 4. If you cover a wound with a bandage, then it will not heal because more germs will be able to enter the wound.
This CS will be page 7 in your notebooks. Class Starter • Pick up the Vocabulary Class Starter located on the corner of the cart near the door.
Class Starter Put this CS on page 10! Anything that takes up space and has mass or weight is a. gravity b. magnetism c. matter 2. The smallest part of a substance that still is that substance is a. molecule b. magnetism c. gravity 3. The state of matter that has no definite size or shape is a. solid b. liquid c. gas 4. The state of matter that has a definite size but no definite shape is a. solid b. liquid c. gas 5. The state of matter that has a definite size and shape is a. solid b. liquid c. gas 6. Molecules are closest together in a a. solid b. liquid c. gas 7. Matter changes its state when heat is added or removed. True or False 8. The changing of a solid to a liquid is called a. melting b. freezing c. condensing
Class Starter Turn in your vocabulary! Put today’s CS on page 10 under yesterdays CS! I am a state of matter: my molecules are very close together and hardly move. I am ____________. I am a state of matter: my molecules are jumping all over the place. I must be a _________. I am a state of matter: my molecules move past each other easily, but they are pretty close together. I am____________. If the molecules in a substance are arranged in a tight, patterned kind of way, the matter must be in which state? If you cool a liquid down, you take energy away from it; the molecules or atoms will get closer together and not move much anymore. This is called_______________ and the substance becomes a ________________. What do these pictures represent? Name all three.
Class Starter Put today’s CS on page 10 under yesterdays CS! 1. Everything you can touch is made of _____________________ . 2. The atoms in a solid move ___________________ than in a liquid. 3. Air is _________ % nitrogen. 4. Water vapor is an example of a(n) __________________ . 5. Energy does / does not change the phases of matter. 6. You can use _______________ to change a liquid into a gas. 7. A gas and a(n) _______________ will take the shape of a container. 8. To change a gas to a liquid, you need to increase / decrease the amount of heat energy. 9. To change a solid to a liquid, you need to increase / decrease the amount of heat energy
Class Starter Put today’s CS on page 14! Write a short paragraph describing your thoughts on the Science pre-test.
Class Starter Put today’s CS on page 14! Write the sentences below filling in the correct answers. One way that scientists classify matter is by its _______________________or structure. ____________________mixtures are even throughout the mixture. An _________________ is the simplest form of pure substance and is made of only one type of atom. A _________________ is two or more substances that are not chemically combined with each other and can be separated by physical means. A _________________ is a pure substance that is created when two or more elements chemically combine. ___________________mixtures are not even throughout the mixture. A solute _______________ into a _________________ to form a solution.
Notebook Organization: Please place your first divider between pages 8 (Sci. Safety Test) and 9 (EOG Coach Lesson 25). This divider should be labeled Chemistry. We have graded pages 1-10 so now what should be in your notebook is: 11 & 12 How Structure Affects Properties EOG Coach Lesson 26 – Elements Form Compounds Class Starters (Thursday and Friday) Matter Vocabulary Identifying Elements, Compounds, and Mixtures template How to determine what kind of matter it is! Flow Chart.
Class Starter Put today’s CS on page 18! Draw the flow chart on your paper. Use these terms to fill in the blanks: Compound, Element, Heterogeneous, Matter, Mixture of Pure Substances, Solute, Solution, Solvent
Class Starter Write complete sentences that include the correct answer. Put today’s CS on page 18! • 1. Protons are located in the ________________. • A. electron • B. nucleus • C. neutron • D. electron cloud • 2. Electrons are located in the ________________. • A. electron • B. nucleus • C. neutron • D. electron cloud • 3. Neutrons are located in the _________________. • A. electron • B. nucleus • C. neutron • D. electron cloud • 4. The ___________ makes one atom different from another. • A. the atomic weight • B. the number of protons in the nucleus • C. the number of electrons • D. the number of atoms • 5. ____________ is found in every living organism. • A. Lead • B. Helium • C. Carbon • D. Gold • 6. Atoms combine to make up ______________. • A. protons • B. neutrons • C. molecules • D. electrons
Put today’s CS on page 18! Draw and label the diagram. Write and complete these sentences: 2. In the first electron shell there can be up to ______electrons. 3. In the second electron shell there can be up to ____ electrons. 4. Does this atom have a charge? Explain your answer. Class Starter
Class Starter Put today’s CS on page 18! Pick any atom you would like and draw a Bohr model (like the ones we did yesterday). Use your notes. Make sure you list the following before you draw it: • Element Name • Element Symbol • Atomic Number • Atomic Mass • # of Protons • # of Neutrons • # of Electrons
Put today’s CS on page 24! Class Starter 1. 3. Explain what is wrong with these atoms. 2. Neutrons Electrons Protons Calcium
Class Starter Put today’s CS on page 24! Complete these sentences: A valence electron is ______________________________. Protons have a _________ charge and are found ________. Electrons have a _________ charge and are found ________. A salad is an example of a ______________ mixture. Blood is an example of a ______________ mixture.
Class Starter Put today’s CS on page 24! 1-3: If the statement is true copy it. If the statement is false write false. • 1. You can separate all mixtures by filtration. • 2. All solutions are mixtures, but not all mixtures are solutions. • 3. Oxygen (O) has a greater mass than chlorine (Cl). • 4. What element is this? • How many valence electrons • does this atom have?
Class Starter Put today’s CS on page 24! • How many valence electrons do each of the following elements have? • Nitrogen • Fluorine • Boron • Chlorine • 5. When bonding, how many valence electrons does carbon want to gain from another atom? • 6.When bonding, how many valence electrons does oxygen want to gain from another atom?
Class Starter Put today’s CS on page 34! If the statement is true copy it. If the statement is false write false. 1. A ratio is a relationship in quantity, amount, or size between two or more things. 2. Elements always form compounds in specific ratios. 3. These are examples of element ratios: H2O, H2O2, C6H12O6 Two substances combined by physical means is called a mixture. Two or more atoms of the same element joined together is called a molecule.
FYI! We will have a notebook check on Friday, October 3rd, 2014 – #’s 22-35. Class Starter Put today’s CS on page 34! • If there only about 112 types of elements in the world, why are there so many different kinds of matter? • Describe the difference between a mixture and a compound. • Which kind of mixture is sometimes difficult to distinguish from a compound? Why?
Class Starter Put today’s CS on page 34! Copy the following group names and list their group number(s). Alkali Metals - Alkaline Earth Metal - Halogens - Noble Gases - Transition Metals – List the metalloid symbols.
Class Starter Put today’s CS on page 34! Don’t write the question. Answer in complete sentences. We have learned about 3 subatomic particles. What are their names, locations, and charges? An electrically neutral atom undergoes a change to become negatively charged. What happened? What is an ion? What elements are to the left of the metalloids? What are the valence electrons doing during a covalent bond?
Class Starter Put today’s CS on page 39! Pick any atom that you have never drawn before and draw a Bohr model of the atom. Make sure you list the following before you draw it: • Element Name • Element Symbol • Atomic Number • Atomic Mass • # of Protons • # of Neutrons • # of Electrons
Class Starter Put today’s CS on page 39! Define: Atom Subatomic particle Isotope Ion
Class Starter Put today’s CS on page 39! • Explain the difference between chemical and physical changes. • Which group of elements on the periodic table does not readily combine with other elements? • Describe endothermic and exothermic
Class Starter Put today’s CS on page 39! 1. 2. Which two groups on the periodic table are most likely to form compounds? 3. Name an example of a physical change and a chemical change. 4. Elements always form compounds in specific ratios. What does that mean?
Class Starter Put today’s CS on page 39! • Betsy mixes and stirs two chemical solids together. While stirring she notices that the beaker is getting hot. What is happening to the beaker? • State the Law of Conservation of Mass • List three signs that show us a chemical reaction has occurred. • What is a molecule?
Put today’s CS on page 46! Class Starter 1 2
Class Starter Put today’s CS on page 46! Write the formula and tell how many elements in each equation and how many atoms in each equation. NaOH Elements _____ Atoms _____ 2) 4 HNO3 Elements _____ Atoms _____ 3) 4 Mg(OH)2 Elements _____ Atoms _____ 4) MgCl2 Elements _____ Atoms _____ 5) 4 Li2O Elements _____ Atoms _____
Class Starter Put today’s CS on page 46! List the elements in this compound: H2SO4 How many atoms of each element are in the compound H2SO4? 2. In a chemical formula, what shows the number of molecules? 3. In a chemical formula, what shows the number of atoms? 4. Identify the reactants, products, subscripts, and coefficients in this chemical equation: Mg + O2 MgO2
Class Starter Put today’s CS on page 46! List the element symbols found in period 3. List the element symbols found in the most reactive nonmetal group. What group is the most reactive metals? Why are the noble gases inert? Is the chemical reaction below balance? Explain your answer.
Class Starter Put today’s CS on page 50! Today’s Class Starter is on the table near the door. Read the directions to complete the Substances verses Mixtures and Homogeneous verses Heterogeneous Matter classifying activity.
