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The Atom
The Periodic Table
Chemical Reactions
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100
Atomic mass 210; Atomic number 85. How many neutrons are there?
What is 125!
100
This is a chart that organizes all the known elements.
What is the Periodic Table?
100
T or F: When a chemical change takes place, bonds connecting atoms in reactants break and bonds connecting atoms in products form.
TRUE!
100
Sing the division song.
Dividing fractions is clear, You'll learn without any fear, Invert and multiply, Just invert and multiplyyyy.
200
Think about a wooden chair and a balloon. What do these two objects always have in common?
Both are made of atoms!
200
Locate the element that has an atomic mass of 87.62. Find it? What is the chemical symbol?
What is Sr (Strontium).
200
Which is an example of an ENDthermic reaction? 1) Cake baking 2) Candle buring 3) Fireworks exploding 4) piece of wood smoldering
Cake baking Why? Cake batter must ABSORB energy in order to change to cake. All the other examples are releasing heat (exothermic)
200
What were the 3 kits that were covered in the old science program for grade 6.
1) Experimenting with plants 2) Magnets and Motors 3) Measuring Time
300
Look at picture and label the nucleus.
What is A! It's located in the center...protons and neutrons together in a group.
300
The Periodic Table contains a bunch boxes. What do the boxes represent: 1) A group 2)A period 3)An element 4) A compound
What is an element?
300
Why does increasing temperature generally increase the rate of a chemical reaction? "It causes the particles to________________________"
It causes the particles to move faster and collide more often.
300
Name the teacher/adult that is moving to Europe next year (Italy).
Who is Mrs. Hyder!
400
Calcium is an element . What is the smallest particle in calcium that has all the chemical properties of calcium?
What is an atom of calcium?
400
The prefix semi-means partly. Based on your knowledge of the properties of an element, which kind of elements are most likely used to make SEMICONDUCTORS? 1) Liquids 2) Metals 3)Metalloids 4) Nonmetals
What is metalloid? Why: A semiconductor means that it is "partly good conductor"--a metalloid has both metal properties and nonmetal properties. It makes sense that metalloids would be partly good conductors or semiconductors.
400
See board.
1
400
Ms. Liddle has three mini cones that I'm supposed to give out when a student gives a great answer. What is written on each cone.
A plus, Great Job, and Bravo!
500
Which scientist added negatively charged particles to the model of the atom? 1) N. Bohr 2) John Dalton 3) Ernest Rutherford 4) JJ Thomson
Who is JJ Thomas?
500
How are elements arranged on the Periodic Table? "By increasing_________________________"
By increasing atomic number. Why: The top of the chart has all the elements with a small atomic number. As you move down the atomic number increases.
500
When coal is burned a chemical reaction takes place. Sulfure is released in the air. Which statement is true? 1) The identity of each reactant remains the same. 2)Sulfur is the reactants in this change. 3) The products have different chemical properties than those of the reactants.
3 is True. Why? Chemical changes produce new substances with properties different from those of the reactants.
500
Your End of Book math test is worth a lot of points. In fact, Numbers and computation is worth the most points. How many points do you think Numbers and Computation is worth? Must be within 3 points higher or lower to be correct.
What is 75!