Copper melting at a high temperature is a _________ property.
Physical
100
Iron + Oxygen--> Iron Oxide
Name the reactants in this equation.
Iron and Oxygen
100
What element does not belong to any other group and stands alone?
Hydrogen
100
What is the name of the food produced in photosynthesis?
Glucose
100
Define law of conservation of matter
Matter cannot be created or destroyed
200
Iron reacting with oxygen is a __________ property.
Chemical
200
K + AgCl--> KCl + Ag
Name the products in the equation.
KCl and Ag
200
Where are the non metals located on the periodic table?
The right side
200
What are the reactants of photosynthesis?
Carbon Dioxide & Water
200
When you burn a piece of paper, the ashes don't weigh as much as the original piece of paper. What happened to the rest of the mass.
It was released as a gas
300
Liquid water boiling is a ____________ change.
Physical
300
The iron filings in hot hands react with oxygen to release heat. What kind of reaction has occurred.
Exothermic
300
Columns or groups on the periodic table are ordered by what?
Similar properties
300
Describe the process of cellular respiration.
Any living organism breaking down food to release energy.
300
Tin + Hydrogen Fluoride has a total mass of 158g. If the Hydrogen Fluoride weighs 156g, how much does the Tin weigh?
2g
400
How do you know a physical change has occurred.
Change in appearance, not the chemical makeup.
400
Give an example of an endothermic reaction (Hint: There was only one we did in class)
Vinegar and Baking Soda
400
Rows or periods on the periodic table are based on their ________.
Atomic number
400
What do animal cells produce when they run out of oxygen and continue exercising?
Lactic Acid
400
NaCl + CaO → Na2O + CaCl2
Does the equation display Law of Conservation of Mass?
No
500
List 4 pieces of evidence that a chemical change has occurred.
-Unexpected temperature Change
-Unexpected color Change
-Release of a gas
-New substance is formed/precipitate
-Fire/Burning
500
When NaOH and Al are placed in a test tube together, the test tube heats up. What kind of reaction is this?
Exothermic
500
Where are the noble gases located on the periodic table?
The last column/group 18
500
How does the lack of oxygen affect the energy produced during respiration?
If you have no oxygen, less energy (ATP) is produced.
500
Which of the following equations best illustrates the Law of Conservation of Mass?
A) NaCl + CaO → Na2O + CaCl2
B) 4 NaCl + CaO → 2 Na2O + CaCl2
C ) 2 NaCl + CaO → Na2O + CaCl2
D) 3 NaCl + 2 CaO → Na2O + 3 CaCl2