1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OlgaM077 [116]
4 years ago
15

Elements on the Periodic Table of the Elements are classified into categories such as

Biology
2 answers:
Serga [27]4 years ago
6 0
4) metals and nonmetals :)
Pepsi [2]4 years ago
6 0
4- Metals and nonmetals

I don't believe there are any "rocks" per se on the table. Everything on the table is an atom, there are no molecules. In addition, none of them are mixtures and compounds.

This leaves metals and nonmetals. The periodic table is usually colored in different sections. Elements such as Cobalt are metals, and they're grouped with other metals like Technetium. Metals and nonmetals are the broadest forms of classification, since there are multiple kinds of metals (alkaline, rare earth) and nonmetals (noble gases, etc.)
You might be interested in
PLZ HELP ME
Katyanochek1 [597]

Answer:

tidal power

Tidal power or tidal energy is harnessed by converting energy from tides into useful forms of power, mainly electricity using various methods. Although not yet widely used, tidal energy has the potential for future electricity generation. Tides are more predictable than the wind and the sun.

Ocean thermal energy conservation

Ocean Thermal Energy Conversion (OTEC) is a marine renewable energy technology that harnesses the solar energy absorbed by the oceans to generate electric power. ... OTEC uses the ocean's warm surface water with a temperature of around 25°C (77°F) to vaporize a working fluid, which has a low-boiling point, such as ammonia.

hydrogen fuel

Hydrogen fuel cells produce electricity by combining hydrogen and oxygen atoms. The hydrogen reacts with oxygen across an electrochemical cell similar to that of a battery to produce electricity, water, and small amounts of heat. Many different types of fuel cells are available for a wide range of applications

fuel cell

Fuel cells work like batteries, but they do not run down or need recharging. They produce electricity and heat as long as fuel is supplied. A fuel cell consists of two electrodes—a negative electrode (or anode) and a positive electrode (or cathode)—sandwiched around an electrolyte.

Energy Efficiency

Energy efficiency simply means using less energy to perform the same task – that is, eliminating energy waste. Energy efficiency brings a variety of benefits: reducing greenhouse gas emissions, reducing demand for energy imports, and lowering our costs on a household and economy-wide level.

Hybrids

a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction.

Bovid Hybrids. Zubron - hybrid of domestic cattle and european bison

cogeneration

Cogeneration—also known as combined heat and power, distributed generation, or recycled energy—is the simultaneous production of two or more forms of energy from a single fuel source. Cogeneration power plants often operate at 50 to 70 percent higher efficiency rates than single-generation facilities

Explanation:

7 0
3 years ago
if I ride my bike to school instead of walking, then I will get there faster what is the dependent variable​
vladimir1956 [14]

Answer:

you will get there faster.

Explanation:

this is all related to your rate of speed the faster you pedal the faster you reach school if you walk faster than ride it'll be the other way around.

6 0
3 years ago
Explain how it is possible for dead cells to perform useful functions.Include two examples of such functions
makvit [3.9K]

Answer:

In plants, dead cells are not excreted, rather, they form key structural elements which support and protect living tissue as the organism grows. Two examples of useful functions are the formation of  (1.) xylem vessels and (2.)sclerenchyma.

Explanation:

  1. Xylem vessel: mature xylem vessel is made up of dead cells called <em>vessel elements</em> aligned end-to-end; here, the ends are dissolved and the protoplasm is absent. These form long, continuous tubes that facilitate the unobstructed flow of water and minerals to other areas within plants.
  2. Sclerenchyma are comprised of dead cells which have secondary walls reinforced with lignin. In plants, they provide key structural support and greater mechanical strength to prevent damage or tears within the plant tissue.

6 0
4 years ago
Rem sleep is also called _____ because the brain is aroused and active while the person remains nonresponsive and asleep.
Gekata [30.6K]

The answer to this question is Paradoxical sleep. Paradoxical sleep is the stage of sleep where in the person’s muscles are relaxed and this is the stage that is called a dreaming sleep. In this stage of sleep the person is in deep sleep state.    

5 0
3 years ago
What does the ATOMIC MASS tell us about an atom?
miss Akunina [59]

Answer:

Protons + neutrons

Explanation:

Atomic mass is the group of masses of protons and neutrons in the nucleus of that atom

5 0
3 years ago
Other questions:
  • 2. Comparing and contrasting the morphological, behavioral, and physiological traits of the nematodes and flatworms you observed
    8·1 answer
  • In which phase(s) of matter are the atoms closely packed but still able to slide past each other?
    8·2 answers
  • Is predation a density-dependent or density-independent factor ?
    13·2 answers
  • I need help like asap please! I don't know what to do, need the answers before midnight please!
    5·1 answer
  • There are five different types of nucleotide bases found in living things. Which
    13·2 answers
  • is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants t
    12·1 answer
  • Do you consider some animals "better" than others? For example, animal testing on a mouse is okay, but animal testing on a dog o
    14·2 answers
  • True or false, immersion oil can be used with all lenses?
    5·1 answer
  • The Mauna Loa Observatory in Hawaii has been collecting data about the
    8·1 answer
  • Complete the sentence.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!