Chemistry Worksheet BI

 

Chemistry Review

 

 

1. Everything in the universe is made of __________________________________.

2. The measurement of the amount of matter in an object is called ___________________.

3. What are the 3 states of matter?

    A.____________________________________
B.____________________________________
C.____________________________________

4. Charged particles that move around an atom’s nucleus are called ________________________.

5. Chemical bonds are broken, atoms are rearranged, and new bonds are formed during ___________________________  ______________________________.

6. Atoms with filled outermost energy levels tend _____________ to participate in chemical reactions.

7. A pure substance that cannot be broken down is called an ____________________.

8. The simplest part of an element is an ____________________.

9. The central core of an atom is called the _____________________________.

10. In an ionic bond, __________ atoms of ________________ charge are held together by _________________________ attraction.

11. The part of an atom that has a neutral charge is a _______________________.

12.  Most of the mass of an atom is found in the _____________________.

13. A pure substance made up of atoms of one or more elements is called a ____________________________.

14.  Most atoms tend to undergo ____________________  _________________, combining in ways that cause their atoms to become more ____________________.

15. When two atoms share one or more electrons, it is called ____________________________  ______________________.

16.   A bond formed by electrical attraction between two opposite charged ions is called ______________________  ____________________.

17.   The ability to do work or cause change is _____________________.

18.   A redox reaction involves the _____________________ of ___________________ between atoms.

19. The amount of energy needed to start a chemical reaction is the reaction’s _________________________  ___________________.

20. A substance that neutralizes small amounts of acids or bases added to a solution is a _______________________.

21. A chemical reaction that can proceed forward or backward is a ______________________  ______________________.

22.  Sodium chloride (table salt) is an example of a compound formed by ______________ _________________.

23.  The positive charge part of an atom is called a ___________________________.

24.   A particle composed of one or more atoms is a ________________________.

25.  Chemical reactions that release free energy are called ____________________________ ____________________________.

26.   Chemical reactions that absorb free energy are called ____________________________ _______________________________.

27.   The loss of one or more electrons is called ______________________.

28.   The gaining of one or more electrons is called _______________________.

29.   The breaking apart of water molecules into two ions of opposite charge is called ___________________________________.

30.   An atom has six electrons, what is it atomic number? ____________  Name?___________  It is a stable or unstable atom? _________________.

31.   Why is it necessary for oxidation and reduction reactions to occur in pairs?

32. What is the role of enzymes in chemical reactions occurring in living things?

 

33. Describe the relationship between the solute, the solvent, and the concentration of a solution.

 

34. List 2 characteristics of acids and 2 characteristics of bases.

 

35.  What is the pH Scale, and what does its range of values mean?

 

 

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Chapter 4 – Carbon and Molecular Diversity Objectives

 

 

Chapter 4   Carbon and Molecular Diversity of Life
Objectives
The Importance of Carbon

1.  Explain how carbon’s electron configuration accounts for its ability to form large, complex, and diverse organic molecules.

2.  Describe how carbon skeletons may vary, and explain how this variation contributes to the diversity and complexity of organic molecules.

3.  Describe the basic structure of a hydrocarbon and explain why these molecules are hydrophobic.

4.  Distinguish among the three types of isomers: structural, geometric, and enantiomer.

Functional Groups

5.  Name the major functional groups found in organic molecules. Describe the basic structure of each functional group and outline the chemical properties of the organic molecules in which they occur.

 

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BI Sample 2 Lab Volume of Object

 

 

Volume of an Irregular Object

 

 

Introduction

 

Everything is made of matter. Matter has physical and chemical properties. Physical properties are observable, such as mass, volume, and density. Mass is a fundamental property of an object generally regarded as equivalent to the amount of matter in the object. Volume is the amount of space it takes up. Density is the thickness of it the formula for density is D=M/V. The purpose of this experiment was to find the mass, volume, and density of three different objects.

 

Hypothesis

 

Determining the volume of an irregularly shaped object can help in determining density.

 

Materials

 

The materials used included a rubber stopper, a rock, a shell, a 100mL graduated cylinder, water, electronic balance, paper, and pencil.

 

Methods:

 

Obtain rubber a stopper, a shell, and a rock. Estimate and record the mass and volume of the three objects. Weigh and record each object. Take the graduated cylinder and fill halfway with water and record the volume. Add one object and record the new volume. Subtract initial volume from final, and record. Repeat with the other three objects.

 

Results:

 

Object Estimated mass (g) Estimated volume (ml) Actual mass (g) Volume of H2O (ml) Volume of object + H2O (ml) Object’s Volume (ml) Density D=m/v

(g/ml)

Rubber Stopper 8g 65ml 8.3g 50ml 56ml 6ml 1.38g/ml
Shell 2g 55ml 3.1g 50ml 53ml 3ml 1g/ml
Rock 4g 60ml 7.8g 50ml 54ml 4ml 1.95g/ml

1. How did you determine the object’s:

a. Mass? Weighed it on a electronic balance

 

b. Volume? Put it in the water and measured the volume then subtracted the volume of the water before the object.

c. Density? Divided mass into volume

2. How did your estimates of mass and volume compare to the actual mass and volume of each object?

Our estimates of mass were close to the actual mass. Our estimates of volume were off not close to the actual volume at all.

3. Objects will sink if they are denser than water. Explain why ships made of steel float instead of sinking since steel is denser than water.

Because the ship has a hallow cavity with trapped air in it.

 

Error Analysis:

 

The volume of the water might not have been measured correctly.

 

Discussion and Conclusion:

 

The volume of the rubber stopper, rock and shell were determined by submerging them in a graduating cylinder containing water. The original water level in the cylinder was subtracted from the final water level to get the volume (ml) of each object. The actual mass (g) of each object was obtained by placing each on an electronic balance. Density could then be determined by dividing the mass of each object by its volume. The data showed the rock to have the greatest density at 1.95 g/ml with the rubber stopper 1.38 g/ml and the shell 1 g/ml being less dense.

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Chemistry for Physical Science

UNITS OF STUDY
NATURE OF SCIENCE CLASSIFICATION OF MATTER ATOMIC STRUCTURE & THE PERIODIC TABLE
CHEMICAL BONDS ELEMENTS and THEIR PROPERTIES CHEMICAL REACTIONS
SOLUTIONS ACIDS, BASES, & SALTS CARBON CHEMISTRY

 

NATURE OF SCIENCE

Methods and Science, Standards of Measurement, Communicating with Graphs

OPENERS:

POWERPOINT & NOTES:

 

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ANIMATIONS & INTERACTIVES:

 

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CLASSIFICATION OF MATTER

Composition of Matter, Properties of Matter

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PROPERTIES OF ATOMS & PERIODIC TABLE

Structure of the Atom, Masses of Atoms, and the Periodic Table

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CHEMICAL BONDS

Stability in Bonding, Types of Bonds, and Writing Formulas and Naming Compound

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ELEMENTS and THEIR PROPERTIES

Metals, Nonmetals, and Mixed Groups

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CHEMICAL REACTIONS

Chemical Changes, Chemical Equations, Classifying Chemical Reactions, and Chemical Reactions and Energy

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SOLUTIONS

How Solutions Form, Dissolving Without Water, Solubility and Concentration, and Particles in Solution

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ACIDS, BASES, & SALTS

Acids and Bases, Strength of Acids and Bases, and Salts

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CARBON CHEMISTRY

 

OPENERS:

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ANIMATIONS & INTERACTIVES:

 

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