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Questions and Answers
How many atoms are in a molecule of RSq?
How many atoms are in a molecule of RSq?
2 atoms (R and Sq)
How many different types of atoms are found in a molecule of TSQ2R?
How many different types of atoms are found in a molecule of TSQ2R?
3 atoms (T, SQ, and R)
How many atoms are in a molecule of SQ in TSQ2R?
How many atoms are in a molecule of SQ in TSQ2R?
2 atoms
Can a particle be a single atom?
Can a particle be a single atom?
What holds atoms together?
What holds atoms together?
Can a particle be a molecule?
Can a particle be a molecule?
What is the definition of a particle?
What is the definition of a particle?
When atoms are touching, how is that communicated in the code?
When atoms are touching, how is that communicated in the code?
What is a common characteristic of the samples in which an ampersand (&) is used?
What is a common characteristic of the samples in which an ampersand (&) is used?
How are the codes (chemical formulas) for pure substances different from those for mixtures?
How are the codes (chemical formulas) for pure substances different from those for mixtures?
How do you define elements?
How do you define elements?
How do you define compounds?
How do you define compounds?
How are the codes (chemical formulas) for elements different from those for compounds?
How are the codes (chemical formulas) for elements different from those for compounds?
Is straining cooked pasta from water into hydrogen and oxygen physical or chemical separation?
Is straining cooked pasta from water into hydrogen and oxygen physical or chemical separation?
Which type(s) of matter could be separated by physical methods?
Which type(s) of matter could be separated by physical methods?
Which type(s) of matter would need to be separated by chemical methods?
Which type(s) of matter would need to be separated by chemical methods?
Explain the difference between an atom and an element.
Explain the difference between an atom and an element.
Explain the difference between an element, molecule, and compound.
Explain the difference between an element, molecule, and compound.
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Study Notes
Atom and Molecule Basics
- RSq contains 2 atoms: R and Sq.
- TSQ2R features 3 distinct atoms: T, SQ, and R.
- In TSQ2R, SQ constitutes 2 atoms.
Particles Defined
- A particle can be a single atom or a bonded group of atoms acting as a unit.
- Molecules and ions are also classified as particles.
- Definition of particle: a single atom or a group of bonded atoms.
Chemical Bonds and Separations
- Atoms are held together by chemical bonds.
- Physical separation methods apply to mixtures, while compounds require chemical separation.
Chemical Codes and Symbols
- In coding, atoms in contact have no intervening spaces or "and" symbols.
- Mixtures are indicated by the presence of an ampersand (&).
- Codes for pure substances differ from mixtures; elements have only one capital letter in their codes.
Categories of Matter
- Elements are pure substances consisting of only one type of atom.
- Compounds are pure substances composed of two or more types of atoms.
Differences Explained
- An atom refers to the fundamental particle, while an element represents a group of identical atoms.
- A molecule consists of two or more atoms joined by chemical bonds; if the atoms are identical, it pertains to an element, whereas a collection of different atoms forms a compound.
Physical and Chemical Properties
- Straining cooked pasta is an example of a physical separation method.
- Mixtures can be separated physically, while only chemical methods suffice for compounds.
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