matter and atoms
What mixture that do not have the same properties are called?
Heterogeneous Mixtures
What is the most common sign a Chemical Reaction has happened?
change in temperature,change in color and making a new solid or gas.
What factor is full of living components. examples Plants, animals, and all of the other organisms that live in an ecosystem are ______ factors?
Biotic
major surface currents in the world oceans?
gulf stream,the kruoshio current,and the antarctic
What are recourse that can be replenished naturally at a rate comparable to their consumption?
Renewable
What mixture has the same properties throughout?
Homogeneous Mixtures
Chemical change occurs when?
substance changes its identity because its particles have been rearranged
What ecosystem are the nonliving components. These include rainfall, temperature, sunlight, water, soil, rocks, and air is a ____ factor?
Abiotic
where is most fresh water?
glaciers and ice caps
What are resources that exist in a limited supply and cannot be replaced within a human timescale?
Nonrenewable
Atoms are called what to matter?
building blocks
What happens when a physical change occurs?
a substance changes its appearance but not its identity or chemical composition
What are organisms that use the Sun's energy to make their own food?
producers
what are the main components of the hydrosphere?
oceans,rivers,lakes,ground water,glaciers,ice,snow
sun,wind,water
renewable or nonrenewable
renewable
A type of homogeneous matter that is made up of only one kind of material is called a what?
pure substances
Make this chemical equation even
H2+O2=H2O
2H2+O2=2H2O
What are animals that get energy by eating producers or other consumers?
Consumers
what percent of earths surface is covered by water?
71%
what are these examples of?
coal,nature gases,oil,nuclear energy
renewable or nonrenewable
nonrenewable
What are matter two major categories?
pure substances and mixtures
Make this chemical reaction even
N2+H2=NH3
N2+3H2=2NH3
What are organisms that feed on wastes and dead plants and animals?
Decomposers
what percents of earths water is saltwater?
97.5%
what are the main types of energy sources?
nonrenewable and renewable