Hosted By Mrs. Anicito

OH MY GOSH, THE TEST IS TOMORROW

Row 1, Col 1 A chemical change is also ALWAYS this as well. What is a chemical reaction?

1,2 This is what we call a reaction that absorbs energy. What is endothermic?

1,3 Tin foil is an example of this physical property of metals. What is malleability?

1,4 What are the products? The sugars and oxygen in this equation. (hint-written to the right of the arrow)

2,1 What are valence electrons? Outer shell electrons.

2,2 What are isotopes? Iron-55 and Iron-56 are examples of these.

2,3 True of False Reactions always absorb or release exactly the same amount of energy. What is false? Sometime they absorb or release energy to the surroundings, think endo and exo!

2,4 Electrons live in these. What are energy levels or the electron cloud?

3,1 What is 20 grams & the law of conservation of mass? I mix 10 g of reactant A with 10 g of reactant B, this is the mass of my products and the law they observe.

3,2 What are the metals? I represent almost ¾ of the elements on the periodic table. Hint: what type?

3,3. What is C 2 H 3 N? The correct chemical formula for this structure:

3,4 What are the alkali metals? I am the group of elements that are the first column on the left (sodium is one of my members).

4,1 What are bases? Mg(OH) 2, ammonia and baking soda (Na 2 CO 3 ) are all examples of these.

4,2 What is noble gases? The least reactive group of elements on the periodic table.

4,3 What are heat and electricity? Metals are good conductors of these.

4,4 What is a hydronium ion? This is how pH is measured and looks like this (the name):

5,1 How elements are arranged on the modern periodic table. Bonus – who arranged them this way What is by increasing atomic number? Henry Mosely

5,2 When an element gains or loses electrons, we call it this. (hint – think of pH) What is an ion?

5,3 What is a period? The name for a horizontal row on the periodic table.

5,4 Describe the nucleus of an atom. What is positive and contains protons and nuetrons?