Energy Transformations
Which form of nuclear energy is used in power plants?
fission
Which type of bonding involves a metal and a nonmetal?
ionic
What are the 2 main parts of a chemical reaction?
reactants and products
What method of heat transfer travels in waves?
radiation
What are independent variables?
what the SCIENTIST changes
What form of energy do fossil fuels and food have?
chemical
Where do you look for NONMETALS on the periodic table?
the right side of the stairstep line
What word represents the arrow in a chemical reaction?
yields
When does conduction heat transfer happen?
when the objects are in DIRECT CONTACT
How do you identify constants?
identify things that were kept the same
What object does the following transformation?
light --> chemical
a plant
Why do atoms bond with each other?
to get to 8 valence electrons OR become more stable
Where are the reactants in a chemical equation?
to the left of the arrow/at the beginning
What method of head transfer does a microwave use to reheat your food?
radiation
What key words should be part of a good hypothesis?
IF and THEN
What is the energy transformation of a person using a toaster to make a piece of toast? 3 types of energy!
electrical --> mechanical --> thermal
CaF2
Ionic
What does the Law of Conservation of Matter say?
Matter cannot be created or destroyed.
What method of heat transfer explains the top floor of a house being warmer than the first floor during the summer?
IF Kaley heats water using a microwave, kettle, and hot pot, THEN the hot pot will heat the water the fastest.
What is the dependent variable?
how fast the water heats
thermal energy/heat
Which type of bonding is represented by the phrase "sharing is caring"?
covalent
When balancing chemical equations, what should one do first?
count the elements in the reactants and products
When does heat transfer stop happening?
objects are the same temperature/EQUILIBRIUM
What is a control?
the trial with the "normal" version of the independent variable used for comparison