- How do elements differ from each other quizlet?
- Why is each element unique and different?
- What are the similarities of elements and compounds?
- What are the 4 main classification groups for matter?
- Which types of matter could be separated by physical methods?
- What do molecules and compounds have in common?
- How are the compounds formed?
- What are the 10 most common elements?
What makes one element different from another is the number of protons in the nucleus of its atoms. An atom is the smallest particle of an element that retains the properties of that element. Atoms contain protons and neutrons in the nucleus and electrons outside the nucleus.
How do elements differ from each other quizlet?
What makes one element different from another? Elements are different because they contain different numbers of protons. The number of neutrons in an atom is the difference between the mass number and the atomic number.
Why is each element unique and different?
All atoms have protons, electrons and neutrons, but what makes each element unique is the number of protons. For instance, a helium atom has 2 protons. The number of protons in an atom is known as the atomic number. So the element helium has the atomic number 2, because it always has 2 protons.
What are the similarities of elements and compounds?
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 are the 4 main classification groups for matter?
Classify matter as an element, compound, homogeneous mixture, or heterogeneous mixture with regard to its physical state and composition.
Which types of matter could be separated by physical methods?
a) Which type of matter can be separated by physical methods (no bonds needed to break) such as filtering or distillation? Mixtures can be separated by physical methods.
What do molecules and compounds have in common?
Compound Basics Molecule is the general term used to describe any atoms that are connected by chemical bonds. Every combination of atoms is a molecule. A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds.
How are the compounds formed?
The answer is that compounds are formed when elements are joined and held together by strong forces called chemical bonds. Covalent bonds share electrons between atoms in order to fill their electron shells. In the compound, molecules are held together by the attraction between the nucleus and the shared electrons.
What are the 10 most common elements?
- 1.) Hydrogen. Created during the hot Big Bang but depleted by stellar fusion, ~70% of the Universe remains hydrogen.
- 2.) Helium. About 28% is helium, with 25% formed in the Big Bang and 3% from stellar fusion.
- 3.) Oxygen.
- 4.) Carbon.
- 5.) Neon.
- 6.) Nitrogen.
- 7.) Magnesium.
- 8.) Silicon.