Atom: protons, neutrons, and electrons
Phases: Solids, liquids, gases
Covalent and Ionic Bonds
solutions, mixtures, and compounds
Physical and Chemical Properties and Changes
100
How does the charge and size of a electron compare to the charge and size of a proton?
Electrons are smaller and have a negative charge, protons are larger and have a positive charge
100
a that substance is made up of fast moving particles that are spread apart from each other and occasionally bump into each other?
What is a gas
100
How do Ionic Bonds Form? How do Covalent Bonds Form?
Ionic Bonds occur between a metal and a non metal. THE METAL LOSES AN ELECTRON TO THE NON-METAL Covalent Bonds occur between two non-metals. They share electrons
100
Say whether the following substance is an element compound or mixture: a.) Salt (NaCl) b.) Lithium (Li) c.) Sugar: (C6H12+O+6) d.) Air (N2 + O2 + Ar): e.) Sulfur Dioxide (SO2):
What is compound element Mixture Mixture Compound
100
List three Physical Properties of the blackboard
It is black, flat, smooth, odorless, etc
200
Using your periodic table Sodium has how many protons, how many electrons, and how many neutrons?
What is Protons=11 Electrons=11 Neutrons=12
200
Water forming on the outside of a water bottle or on the leaves of grass on a cold morning is an example of a.) melting b.) evaporation c.) condensation d.) freezing
What is "C" condensation
200
What is the name of the element NaCl2?
What is sodium chloride Ionic Bond
200
Which of the following is a heterogeneous mixture: a.) air b.) Rocks in water c.) Gasoline d.) Lemonade
What is rocks in water
200
All of the following are physical properties except a.) It is in a liquid state b.) It reacts with water c.) It’s boiling point is 125 deg. Celsius d.) It is yellow
What is B it reacts with water
300
Draw the Bohr Model for Neon
Should contain a positive nucleus with 10 electrons, 2 in the 1st shell and 8 in the 2nd
300
If a solid is cooled from 50 degrees to -15 degrees at a constant pressure, what happens to the molecules during the process?
the particles slow down and stick together
300
What is the correct formula for Magnesium Chloride? a.) MgC2 b.) MaCl2 c.) MCL2 d.) MgCl2
What is "d" MgCl2
300
For each of the following mixtures, say whether is a solution, suspension, or solid. a.) pudding b.) butter c.) salt water d.) oil and vinegar e.) Milk
What is a colloid colloid solution suspension colloid
300
All of the following are physical changes except a.) Cloth burning b.) Water evaporating c.) Plastic melting d.) Popsicles freezing
What is A cloth burning
400
How man valence electrons does Se (Selenium) have? Based on its position in the periodic table
What is 6 valence electrons
400
Sulfer atoms form covalent bonds with each other. Why do these atoms form covalent bonds? a.) Atoms are transferred to each will have a full set of valence electrons b.) Each atom almost has a complete shell of valence electrons so they share since they are both trying to gain electrons c.) Each atom has only a few electrons so they lose their electrons d.) They share because it is the greatest transfer of energy
What is "B" Each atom almost has a complete shell of valence electrons so they share since they are both trying to gain electrons
400
What is the name of SeF6?
What is selenium hexaflouide covalent bond
400
Sedimentation separates particles by relying on a.) Density b.) Size c.) Temperature d.) Reactivity Distillation can be used to separate liquids with different. A. boiling points B. freezing points C. densities D. viscosities
What is Sedimentation=density(weight) viscosity=boiling point
500
Chlorine is located in group 17 of the periodic table. What charge ion is chlorine likely to form? a.) +1, because it tends to gain 1 electron b.) -1, because it tends to gain 1 electron c.) +1, because it tends to lose 1 electron d.) -1, because it tends to lose 1 electron
What is "B" -1, because it tends to gain 1 electron
500
Ionic Bonds have high or low melting points
What is high
500
Covalent Bonds have high or low melting points
What is Low
500
What is the correct formula for dicarbon trioxide?
What is C2O3
500
If the pressure is held constant at 67 atms, and the temperature increases from -50 degrees to 20 degrees celsius what phase change occurs?
What is Melting
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