What are some of the elements common uses?

1)AluminumA light metal used in making airplanes, buildings, pots & pans, etc.
2)BromineUsed in photography, medicines, insecticides, etc.
3)CalciumA soft, metallic chemical element found in limestone, marble, chalk, etc.
4)CarbonFound in coal, oil gas, living things, & inks
Which elements will have similar properties?

Elements in the same group of the periodic table have similar chemical properties. Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.

What do these similar elements have in common?

The elements in the same group has similar number of valence electrons. They have identical number of electrons in their outermost shell. e.g. All the alkali metals in Group 1 have 1 valence electron, so they all tend to react the same way with other substances.

What is the most commonly used element?

Hydrogen is the commonest element in both the Universe (over 90%) and the Solar System (70.68%). Iron is the commonest element in the earth, accounting for 36% of the mass, whilst molecular nitrogen (N2) is the commonest in the atmosphere at 78.08% by volume or 75.52% by mass.

What element do we use everyday?

The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.

How do you know elements are similar?

Two different elements have similar chemical properties when they have the same number of valence electrons in their outermost energy level. Elements in the same column of the Periodic Table have similar chemical properties.

Are there any similarities between the elements that are highly reactive?

Elements in the same group of the periodic table have the same number of valence electrons. … Valence electrons determine many of the properties of an element, so elements in the same group have similar properties. All the elements in group 1 have just one valence electron. This makes them very reactive.

Is oxygen and sulfur similar?

Because sulfur is directly below oxygen in the periodic table, these elements have similar electron configurations. As a result, sulfur forms many compounds that are analogs of oxygen compounds, as shown in the table below.

What is similarities in elements for the same group?

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties.

What are two things that are elements in the same group make them similar?

All the elements in one group have the same number of valence electrons. The valence electrons are those on the energy level the most distant from the nucleus. These valence electrons are those involved in bonding with other atoms to form compounds.

Why do elements in the same group have similar?

A vertical column in the periodic table of elements is called group. … So, we can say that elements in a group have the same physical and chemical properties because their atoms have the same number of valence electrons or same valence shell electronic configuration.

What is the rarest element on Earth?

A team of researchers using the ISOLDE nuclear-physics facility at CERN has measured for the first time the so-called electron affinity of the chemical element astatine, the rarest naturally occurring element on Earth.

What element makes up about 90% of the known universe?

Hydrogen is the lightest gas and element and is the most abundant in the universe. It is estimated that 90% of the visible universe is composed of hydrogen.

What is the rarest element in the universe?

Astatine is the rarest naturally occurring element.

What element is used in medicine?

Most metals are used as cofactors or prosthetics in enzymes, catalyzing specific reactions and serving essential roles. The essential metals for humans are: Sodium, Potassium, Magnesium, Copper, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Zinc, Molybdenum, and Cadmium.

What are the 25 elements essential to life?

  • The Big 4.
  • Carbon, oxygen, Hydrogen, and Nitrogen.
  • 96%
  • The Major elements.
  • CAlcium, Phosphorous, Potassium, sulfur, Sodium, Chlorine and Magnesium.
  • 3.5%
  • Trace Elements.
  • Boron, chromium, cobalt, copper, fluorine, iodine, iron, manganese, molybdenum, selenium, silicon, tin, & vanadium.
Which element is highest in human body?

Oxygen. Oxygen is the most abundant element in the human body. It makes up 65 percent of the total weight of a person.

What are 3 similar properties of these elements alkali metals?

  • They are shiny, soft, metals.
  • They are very reactive.
  • They all have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell. …
  • They are soft enough to be cut with a knife.
How do you know if a pair of elements have similar properties?

The number of valence electrons of an element can be determined by the group (vertical column) number in the Periodic Table. Elements with the same number of valence electrons have similar chemical properties.

Are the atoms of different elements similar?

No. Two atoms of the same chemical element are typically not identical. … Since the states of the electrons in an atom are what determine the nature of the chemical bonding that the atom experiences, two atoms of the same element can react differently if they are in different states.

What are the similarities of element and compound?

On first glance, elements and compounds might appear different, yet they share many similarities, like being made up of atoms and having bonds linking their atoms together. Elements and compounds also share the qualities of being both pure and homogeneous substances.

What items have similar characteristics or properties How are they similar?

Two elements have similiar characteristics when they belong to the same family that means that have placed in the same column of the periodic table. On the periodic table you can also find some chemical-phisic characteristics like electronegativity, density, melting point…

Is fluorine similar to chlorine?

What Makes Them Similar? When you look at our descriptions of the elements fluorine and chlorine, you will see that they both have seven electrons in their outer shell. That seven-electron trait applies to all of the halogens. … Fluorine is the most reactive and combines with most elements from around the periodic table.

What is similar about elements in the same period?

Elements in the same period have the same number of electron shells; moving across a period (so progressing from group to group), elements gain electrons and protons and become less metallic. This arrangement reflects the periodic recurrence of similar properties as the atomic number increases.

What is the most abundant thing on earth?

Q: What is the most abundant element on Earth? A: Oxygen, which composes about 49.5% of the total mass of the Earth’s crust, waters and atmosphere, according to the textbook “Modern Chemistry.” Silicon is second at 28%.

What was the first man made element?

The name is from the Greek word for artificial, since technetium was the very first man-made element, yet despite the name, technetium is found naturally albeit in tiny traces.

What is the least common element on earth?

The chemical composition of the earth is quite a bit different from that of the universe. The most abundant element in the earth’s crust is oxygen, making up 46.6% of the earth’s mass. Thulium is the least abundant element.

What's your body made of?

The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.

What is a pure substance that Cannot be separated?

An element is a pure substance that cannot be separated into simpler substances by chemical or physical means.

What element is the Earth mostly made of?

More than 90 percent of Earth’s mass is composed of iron, oxygen, silicon, and magnesium, elements that can form the crystalline minerals known as silicates. Nevertheless, in chemical and mineralogical composition, as in physical properties, Earth is far from homogeneous.