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| Question | Answer |
| What is the structure of a proton? | |
| What is the structure of a proton? word form | Along with protons, neutrons make up the nucleus, held together by the strong force. The neutron is a baryon and is considered to be composed of two down quarks and one up quark. |
| What is the structure of an atom neutron? | Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus |
| What is the structure of an atom neutron? | |
| What is the structure of an atom electron: | |
| What is the structure of an atom neutron? word form | In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule (or other physical structure) in atomic or molecular orbitals |
| What is the difference between an element and a compound | A compound is a substance made from two or more different elements that have been chemically joined. |
| What is the difference between element and a mixture | The different substances are not chemically joined together. Each substance in the mixture keeps its own properties. The compound has properties different from the elements it contains. |
| What is the difference between compound and mixture? | The different substances are not chemically joined together. Each substance in the mixture keeps its own properties. The compound has properties different from the elements it contains. Each substance is easily separated from the mixture. |
| Represent elements and compounds using chemical symbols and formulas | |
| What is the difference between physical and chemical change? | |
| What is heterogeneous: | A mixture of sand and sugar is a heterogeneous mixture. The grains can be distinguished from each other with a magnifying glass. There are two solid phases: the sand grains, and the sugar grains. |
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