Heat & Energy
Variables
Elements &
Compounds
Compounds
Changes
Surprise!!
100
The process in which heat flows from objects with higher temperature to objects with lower temperature is______.
Conduction
100
If I add more milk, the tea will get a lighter color... The amount of milk added is the _________ variable.
Independent variable
100
When determining if a substance is a compound or an elements, how many capital letters does a compound have?
2 or more capital letters
100
A type of change where the substance stays the same, but size and shape may change.
PHYSICAL CHANGE
100
People sitting around a campfire are able to feel the heat from the fire. How are the people able to feel the heat from the fire without touching the fire?
A The heat from the fire travels through the ground and heats the ground around the people.
B The heat from the fire is conducted through air molecules to the people.
C The heat from the fire rises in the air and then settles around the people.
D The heat from the fire radiates from the fire to the people.
The heat from the fire radiates from the fire to the people.
200
An empty glass is at room temperature. A student pours cold water into the glass. What will most likely result?
A. Heat energy will transfer from the cold water to the glass until both are at the same temperature.
B. Heat energy will transfer from the glass to the cold water until both are at the same temperature.
C. Heat energy will transfer from the glass to the cold water until the glass has no more heat energy.
Heat energy will transfer from the glass to the cold water until both are at the same temperature.
200
Is the size of fish affected by the depth of the ocean they live? What would be the IV?
The depth of the ocean
200
H20
Compound or element?
Compound
200
Which of the following activities results in the formation of a new material?
A chopping wood
B slicing a pizza
C baking a cake
D mixing sand and water
baking a cake
200
Potential energy transforming into kinetic energy as a roller coaster goes down a hill expresses this Scientific Law
Law of conservation of energy.
300
The roller coaster cart has the most kinetic energy at position-
"X"
300
Define Dependent variable.
variable that is measured and observed
300
How many Elements are in NaClO4COH
5
Na, Cl,O4, C,H
300
Which of the following is an example of a chemical change?
a. melting butter
b. mixing milk and chocolate syrup
c. breaking glass
d. burning fuel
burning fuel
300
Identify the element: Carbon Dioxide(CO2) Water(H2O) Oxygen gas(O2) Sodium Chloride(NaCl)
Oxygen
400
The type of energy transformation that occurs, when a hawk eats a mouse and then uses the energy from the mouse to fly is...
chemical energy to mechanical energy
400
When Mr. Han use more force to throw the ball, the ball traveled further across the room. What is the independent variable? What is the dependent variable?
IV- amount of force
DV- distance ball move
400
Identify the compound: Carbon(C) Chlorine(Cl) Iodine(I) ammonia(NH3)
ammonia(NH3)
400
True or False. Turning peanuts to peanut butter is an chemical change.
False
400
Bill stands in a swimming pool and notices that the water around his feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?
convection
500
What is an object that heat can move through easily?
conductor
500
When John increases the amount of time to study, usually his test scores increase as well. What is the independent variable? What is the dependent variable?
IV- amount of study time
DV- test score
500
Number of atoms in C6H12O6
24 atoms
500
Name the two indicators of a chemical change.
color change, bubbles, temperature change
500
What group of elements is highlighted in orange?
Non metals