November 2nd AGENDA: 1 – Exam Review Please pick up all of your assignments from your folder, leave the folder in the back. Today’s Goal: Students will review for their unit exam. Homework Study for unit test!

Shout Outs Period 1 – Period 2 – Period 3 –

Notes: Please take out your notebook or a piece of binder paper Topic: Review Date: 11/2/12

Review Chemistry Basics Matter is made up of ______________ Compounds are made up of _______________ Molecules are made up of _______________ Elements are types of ______________ How do you know that H 2 O is a compound and not a single element or a molecule? Identify the two elements that this compound is made of.

Review Physical and Chemical Changes For the following questions, fill in the blanks with physical or chemical. Adding red dye to water would a change. Phase changes are changes. Burning paper is a change. An ice cube melting is a change. If a new substance is created, a change has occurred. If heat comes off of a substance a change has occurred.

Review Phase Changes Changing from gas to liquid is called Changing from solid to gas is called Changing from liquid to solid is called Changing from solid to liquid is called Changing from gas to solid is called Changing from liquid to gas is called

Review

States of Matter The particles in a solid are The movement of particles in a liquid is described as What happens to the particles in a liquid when it freezes turning into a solid? Compare the particles in a gas and a solid Phase changes occur when is added What state of matter has a definite volume but an indefinite shape? What state of matter has a definite volume and shape? What state of matter has an indefinite volume and shape?

Review

Density Which cube is more dense? What is the definition of density? If you have a wooden cube with the density of 4.0g/mL and water has a density of 1.0g/mL, with the cube float or sink? You are given the following information: mass = 24 g; volume=4 cm 3. What is the density of this substance? A block of aluminum with a density of 16 g/mL occupies a volume of 2.0mL and weighs 32g. What is its density? Is density a physical or chemical property?

Review Metric Units Measures length Measures mass Measures the amount of space something takes up What is the largest metric prefix? Convert.007g to kilograms (kg) Convert 34dm to millimeters (mm)

Review

Subatomic Particles Electons have a charge Protons have a charge Neutrons have a charge A neutral atoms atomic mass is made up of its + its What subatomic particle defines an element? What happens to the stability of an atom as you add and subtract neutrons?

Review Isotopes What is the definition of an isotope? An element has 10 protons, 10 neutrons, 10 electrons. What element is this? What would be the atomic mass for this element? How would you write this element in Isotope notation? What is another way you can write this element in Isotope notation? An element has 6 protons, 8 neutrons, 6 electrons. What element is this? How many neutrons and protons are in Carbon-14? Protons: ; Neutrons:

Review Mixtures What is the difference between pure substances and mixtures? What are 2 examples of pure substances and 2 examples of mixtures? Chocolate milk is an example of what kind of mixture? Is Aluminum foil a pure substance or a mixture? Macaroni and cheese is what kind of mixture? What is an example of an element?

Review

Homework Review (p. 10)

Independent v. Dependent Independent Variables are causes. Dependent Variables are effects.

Examples You pay attention in class so you get a good grade on your quizzes.

Examples You pay attention in class so you get a good grade on your quizzes. Cause: Paying Attention Effect: Good Grade

Examples You pay attention in class so you get a good grade on your quizzes. Cause / Independent Variable: Paying Attention Effect / Dependent Variable: Good Grade

Examples You eat at McDonalds every day so you gain weight.

Examples You eat at McDonalds every day so you gain weight. Cause: Eating at McDonalds Effect: Gain Weight

Examples You eat at McDonalds every day so you gain weight. Cause / Independent Variable: Eating at McDonalds Effect / Dependent Variable: Gain Weight

Examples You do your homework so you get a good grade.

Examples You do your homework so you get a good grade. Cause: Doing your homework Effect: Good grade

Examples You do your homework so you get a good grade. Cause / Independent Variable: Doing your homework Effect / Dependent Variable: Good grade

Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What is the dependent variable in this experiment?

Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Identify the dependent variable in this experiment: Identify two conditions that are held constant (controlled) in this experiment:

Homework Review (p. 9) 1. The males of the species are larger than the females. 2. The males’ bills are shorter and less curved than those of the female. 3. The hummingbirds in the landscaped garden spent 21% of the time feeding. Of that time, 20% was spent feeding on insects and 80% was spent feeding on nectar. 4. The males get nectar from a species of Heliconia in which the flowers have shorter and less curved petals. 5. The females get nectar from a species of Heliconia in which the flowers have longer and more curved petals. 6. The hummingbirds in the forested area spent 23% of the time feeding. Of that time, 92% was spent feeding on insects and 8% was spent feeding on nectar.

Homework Review (p. 9) 1. Identify: Which are the quantitative data in the example above? Explain. 2. Identify: Which are the qualitative data in the example above? Explain. 3. Synthesize For each of the qualitative observations, give an example of how it could be transformed to quantitative data.

Homework Review (p. 10)

1. Identify: What are the independent and dependent variables in this experiment? 2. Analyze What is the relationship between the amount of antacid and the length of time to neutralize the acid?

Week 8 Weekly Agenda Monday 10/29 – Scientific Method Tuesday 10/39 – Types of Variables Wednesday 10/31 – Precision & Accuracy, Chemical & Physical Changes Thursday 11/1 – Review Friday 11/2 – Review

CHAMPS for October 31st C – Conversation – No talking unless directed H – Help – RAISE HAND for questions A – Activity – Take notes so you can study later. M – Materials and Movement – Pen/Pencil, Paper P – Participation – Take notes, answer questions S – Success – Understand the Scientific Method

Notes: p. 11 Accuracy – How close a measurement is to the true value. Precision – How close a measurement is to other measurements

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and make half, the other half are very close.

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and make half, the other half are very close. Accurate

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and hit the same place on the backboard every time.

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and hit the same place on the backboard every time. Precise

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in.

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in. Accurate and Precise

Accurate, Precise, Both, Neither? You shoot 1,000 baskets and get all of them in. Accurate and Precise

Accurate, Precise, Both, Neither? You make 10 perfect throws to your wide receiver but he misses all of them by different margins.

Accurate, Precise, Both, Neither? You make 10 perfect throws to your wide receiver but he misses all of them by different margins. Neither

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.7, 0, 8, 4, 2 g/mL

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.7, 0, 8, 4, 2 g/mL Neither

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.70, 2.69, 8, 2.70, 2.71 g/mL

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 2.70, 2.69, 8, 2.70, 2.71 g/mL Precise

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.99, 8, 4.95, 5.05 g/mL

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.99, 8, 4.95, 5.05 g/mL Accurate and Precise

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.50, 4.95, 5.05, 5.50 g/mL

Accurate, Precise, Both, Neither? The density of an object is 5 g/mL. You do an experiment to measure the density and get the following values: 5.00, 4.50, 4.95, 5.05, 5.50 g/mL Accurate

p. 11

Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? What is the dependent variable in this experiment? Identify one thing that is held constant.

Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Identify one thing that is held constant.

Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Water that flows through Identify one thing that is held constant.

Question 6 in packet (p. 7) 6. What is the independent variable in this experiment? Type of soil. What is the dependent variable in this experiment? Water that flows through Identify one thing that is held constant. Amount of water. Why?

Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What’s in the container What is the dependent variable in this experiment?

Question 7 in packet (p. 7) 7. What is the independent variable in this experiment? What’s in the container What is the dependent variable in this experiment? Temperature rise

Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Amount of salt Identify the dependent variable in this experiment: Identify two conditions that are held constant (controlled) in this experiment:

Question 8 in packet (p. 8) 8. Identify the independent variable in this experiment: Amount of salt Identify the dependent variable in this experiment: Plant height Identify two conditions that are held constant (controlled) in this experiment: Same height at start of experiment, same amount of water

Exit Ticket (p. 16) Design an experiment that determine whether studying results in better grades. 1. What is your independent variable? 2. What is your dependent variable? 3. What is your control? 4. Are your observations qualitative or quantitative?