Readings
Activities
Scientific Models more
Chemical Reactions
Wild Card
100
What is the definition of the melting point?
The temperature at which a solid begins to to turn into a liquid.
100
Define a pure substance?
A substance made with one type of material all the way through.
100
What are the 3 components of a scientific explanation
Claims, evidence, reasoning
100
What is the blue chemical solution we mixed with aluminum foil? (full name or chemical formula)
Copper Chloride CuCl2
100
What is the essential question for this unit?
How can I make new stuff from old stuff?
200
What determines the state of matter?
Temperature
200
What is the chemical compound for table salt?
NaCl2 (Sodium Chloride)
200
What is the best way to answer the claim?
Restate the question.
200
In this reaction, a substance changes color and a burning smell is released. (Chem? or Phys?)
chemical reaction.
200
What is malleability?
The ability to bend without breaking.
300
What is the melting point of oxygen?
-218 degrees celsius
300
Explain in detail how would you check for hardness?
Scratch test. The object that is scratched is the weaker substance.
300
What should you use to support your reasoning
scientific principles.
300
What chemicals do you need to make soap?
Oil/ Fat and Sodium Hydroxide
300
What is projectile motion (definition or drawing)
400
Draw and label the hierarchy of matter
400
Define heterogeneous mixture? Give an example.
A heterogeneous is any mixture that is not uniform in composition.
400
Write the 3 equations for density
D=m/v
M=D* V
D=m/D
400
A Chemical reaction occurs when a student puts CO2 and H2O together. Write a possible product.
CO2 + H2O ----> ?
What are color change, gas is produced, smell is produced, the reaction is irreversible, temperature change (without cooling or heating,) electrical energy is produced.
400
What is the universal solvent?
Water
500
Draw the complete phase change diagram (triangle/pyramid)
500
Complete the character density for each substance
water
aluminum
soap
fat
water: 1 g/cm3
aluminum: 2.7 g/cm3
soap: 0.84 g/cm3
fat: 0.92 g/cm3
500
In a chemical reaction what are reactants?
