Fechar
The COLOR of a sample is an example of a (physical/chemical) property because ________.
Baking a cake is an example of a (physical/chemical) change because ________.
Defiine:
-Chemical Reaction
Write the difference between an endothermic and exothermic reaction. Which one uses more energy than is released?
What is a product in a chemical reaction?
What is a reactant in a chemical equation?
What is the Law of Conservation of Mass?
Recall the Conservation of Mass Lab. What evidences of chemical reaction occurred? Did they all happen at the exact time?
How does the data from the Conservation of Mass Lab verify Lavosier's Law? If the ziplock bag had not been sealed, do you think the data from the experiment would have verified the law?
2H2 + O2 = 2H2O Explain why this equation is a good example of the law of conservation of mass.
Are H2O and 2HO representations of the same compound? Explain.
What is needed to break bonds in a chemical reaction?
What does a coefficient in chemical equations denote?
What do subscripts in chemical equations denote?
How many Carbon atoms are in the following compound? CH3(CH2)4CH3
Balance the equation: ____N2 + _____H2 ➡ ______NH3
In a chemical equation, the products are to the (right/left) of the arrow?
Define mixture
How is a mixture different from a compound?
Is a state change a physical or chemical change? Explain using water as an example.
What is a precipitate?
When an antacid tablet is placed in water, what type of change will occur? What evidence will confirm your hypothesis?
