What is the best describes an atom?

What is the best describes an atom?

An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

What is atom mostly described as?

Atoms consist of a nucleus made of protons and neutrons orbited by electrons. ( Image credit: Shutterstock) Atoms are the basic units of matter and the defining structure of elements.

What are the different ways to describe an atom?

Different Kinds of Atoms

• Description. Atoms are made of tiny particles called protons, neutrons and electrons.
• Stable. Most atoms are stable.
• Isotopes. Every atom is a chemical element, like hydrogen, iron or chlorine.
• Radioactive. Some atoms have too many neutrons in the nucleus, which makes them unstable.
• Ions.
• Antimatter.

What is the best description of the atom quizlet?

An atom is the smallest particle of an element that still has elemental properties. The number of protons in the nucleus of an atom. You just studied 12 terms!

Which is a characteristic of atoms?

The single most important characteristic of an atom is its atomic number (usually denoted by the letter Z), which is defined as the number of units of positive charge (protons) in the nucleus. For example, if an atom has a Z of 6, it is carbon, while a Z of 92 corresponds to uranium.

What is atom class 9th?

The smallest tiny particles of matter which can’t be divided further is called atom, i.e., an atom is the smallest building block of matter. For example: Sodium (Na), Hydrogen (H), Oxygen (O), etc.

Which of the following is the best description of the structure of an atom?

Which of the following is the best description of an atom’s physical structure? Atoms are little bubbles of space with mass concentrated on the outside surface of the bubble. The particles that form an atom are equidistant from each other.

What is an atom write four characteristics of an atom?

Atoms themselves are composed essentially of electrons (1 negative charge), protons (1 positive charge), and neutrons (no charge). The number of neutrons (the “glue” between the protons) in the nucleus may also vary within a given element.

What is an atom Class 9 short answer?

Answer: The definition of an atom is the smallest component of an element, characterized by a sharing of the chemical properties of the element and a nucleus with neutrons, protons and electrons.

What is atom example?

Many atoms consist of a positively charged nucleus composed of protons and neutrons surrounded by a negatively charged cloud of electrons. At its most basic level, an atom is any particle of matter that contains at least one proton. Here are some examples of atoms: Neon (Ne) Hydrogen (H)

How do you describe the structure of an atom?

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).