Chemistry Bellwork.

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Presentation transcript:

Chemistry Bellwork

Day 1 1. How do you know how many electrons an atom has? 2. How do you know how many protons an atom has? 3. How do you know how many neutrons an atom has? 4. Where are the electrons located in the atom?

Day 2 1. The center of the atom that has a positive charge is a _______. 2. A substance that can’t be broken down into a simpler substance is a (an) __________. 3. The list of all known substances is _______________. 4. A type of bond where one end of a molecule that is negative is attracted to the positive end of another molecule. _______________.

Day 3 1. How many electrons can the first energy level hold? 2. How many electrons can the second energy level hold? 3. How many electrons can the third energy level hold? 4. Where are the protons and neutrons in the atom?

Day 4 2.Anything that occupies space and has mass is ________ 1.Elements essential to life in small amounts are _______. 2.Anything that occupies space and has mass is ________ 3. All the chemical reactions that occur inside the cells is called _______. 4.Substance that undergoes the chemical change is the _________. 5.Substance that is formed from the reaction

Day 5 1. What is a covalent bond? 2. What is a hydrogen bond? 3. What is an ionic bond?

Day 6 I have a container of water and I put 2 tablespoons of baking soda in the water and stir. Answer the question below: What is the solution, solute, and solvent in my mixture.

Day 7 1. Look at your periodic table and find the element iron. What is the symbol, number of electrons, protons and neutrons? 2. What is an example of a polar molecule? 3. List 5 properties of water.