answer each
QUESTION 1
What is matter?
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QUESTION 2
What is an atom?
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QUESTION 3
List and describe the three subatomic particles that make up atoms.
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QUESTION 4
What are elements?
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QUESTION 5
How are elements arranged on the periodic table?
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QUESTION 1
Matter is anything that has mass and takes up space. It is made up of atoms and molecules.
QUESTION 2
An atom is the smallest unit of matter that retains the properties of an element.
QUESTION 3
- Proton: A positively charged subatomic particle found in the nucleus of an atom.
- Neutron: A neutral subatomic particle found in the nucleus of an atom.
- Electron: A negatively charged subatomic particle that orbits the nucleus of an atom.
QUESTION 4
Elements are pure substances made up of only one type of atom. They cannot be broken down into simpler substances by chemical means.
QUESTION 5
Elements are arranged on the periodic table in order of increasing atomic number. This arrangement groups elements with similar properties together.