2. uranium
3. strontium
4. krypton
Answer:
2. uranium would be the best answer
Answer:
The organization of the environment from simple to complex is:
Population refers to the total number of living organism present in a particular area. For example, the human population of any city.
Community refers to the group of populations of two or more species living in a particular area.
Ecosystem refers to the biological community consists of biotic, abiotic, and interaction of biotic and abiotic components.
The biosphere is the region occupied by living organisms. It includes atmosphere, hydrosphere, and lithosphere.
2. metal
substances with only one type of atom
3. metalloid
an element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction
4. nonmetal
an element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction
The elements are substances having only one type of atom and metalloids have properties of both metals and nonmetals.
There are some properties of elements, metals, nonmetals, and metalloids:
1. Elements: Substances with only one type of atom.
2. Metal: An element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction.
3. Metalloid: An element with properties of both metals and nonmetals.
4. Nonmetal: An element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction.
Therefore, elements are substances that can not be further decomposed into smaller units by general chemical processes.
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Answer:
1. Elements
Substances with only one type of atom.
2. Metal
An element that is malleable, polishes to a luster, conducts heat and electricity well, and tends to lose electrons in a chemical reaction.
3. Metalloid
An element with properties of both metals and nonmetals.
4. Nonmetal
An element that is brittle, insulates heat and electricity well, and tends to gain electrons in a chemical reaction.
Temperature is the measure of heat energy or motion of particles. Absolute zero is the temperature at which all motion of particles stops. Absolute zero is the lowest possible temperature. Absolute zero is -273 degrees on the Celsius scale. The Kelvin temperature scale is based on absolute zero. To convert from degrees Celsius to Kelvins, add 273 to the Celsius temperature.
B.) the sun's gravitational pull on Earth
C.) the sun's gravitational pull on the moon
D.) the moon's gravitational pull on Earth