Show:
Chemical or Physical Change
Acids and Bases
Elements and Compounds
Atoms
100
Tearing paper is what kind of change? Why?
What is a physical change. Its still the same
100
Give an example of an acid
What is lemon, vinegar, etc.
100
Where do you find elements?
What is on periodic table
100
In what part of the atom are are protons and neutrons found?
What is the nucleus
200
What are reactants?
What is the substances that you mix together and they react to form a product.
200
Give 2 examples of bases.
What is baking soda, bleaches, toothpaste, cleaning agents, etc.
200
What is the name of CO?
What is carbon monoxide
200
How do you know how many protons an element has?
What is look at periodic table (atomic #)
300
List 3 signs that a chemical change has occurred.
What is -colour change -pH change -gas production -change in temperature -precipitate is formed
300
You are testing a solution with blue litmus paper. The blue litmus paper turns red. You have a what kind of a solution?
What is an acidic solution
300
Give 3 examples of matter
What is table, computer, etc. Anything with volume and mass
300
How do you know how many neutrons an element has?
What is look at periodic table (atomic mass - atomic #)
400
You pour hydrogen peroxide on your cut. Is this a chemical or physical change Explain.
chemical change. bubbles are formed
400
List 2 properties of bases
What is bitter, soapy feel, pH of more than 7, corrosive, etc.
400
Give 2 examples of compounds
What is table salt (NaCl), carbon monoxide, carbon dioxide, etc.
400
How many neutrons does Cu have? Cu has an atomic number of 29 and an atomic mass of 65
What is (65 - 29) = 36
500
What is the chemical formula for water?
What is hydrogen + oxygen = water (H2O)
500
What is the pH value for acids, bases, and a neutral solutionÉ
What is acids -Less than 7 bases - more than 7 neutral - 7
500
Give 2 examples of a heterogeneous mixture
What is pizza, cookies, You can see individual components
500
How many electrons does Mg have? What element in Mg? Mg has an atomic # of 12 and atomic mass of 24
What is Magnesium and 12 (atomic #)