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Questions and Answers
What are found in the nucleus of an atom?
What are found in the nucleus of an atom?
- Protons and Neutrons (correct)
- Electrons and Neutrons
- Electrons and Protons
- Cations and Anions
What is the negatively charged particle of an atom?
What is the negatively charged particle of an atom?
- Electrons (correct)
- Neutrons
- Protons
- Molecule
What is the positively charged particle of an atom?
What is the positively charged particle of an atom?
- Molecule
- Neutrons
- Electrons
- Protons (correct)
What is the particle of an atom that has no electrical charge?
What is the particle of an atom that has no electrical charge?
The word 'atom' comes from Greek 'Atomos' which means what?
The word 'atom' comes from Greek 'Atomos' which means what?
Who was the first person to propose that atoms have weights?
Who was the first person to propose that atoms have weights?
What is the total number of electrons in a neutral oxygen atom?
What is the total number of electrons in a neutral oxygen atom?
What is the atomic number of an element?
What is the atomic number of an element?
Which subatomic particle determines the chemical properties of an element?
Which subatomic particle determines the chemical properties of an element?
What is the mass number of an atom?
What is the mass number of an atom?
Which of the following is an example of an extensive property of a material?
Which of the following is an example of an extensive property of a material?
Who proposed the 'raisin bread model' of the atom?
Who proposed the 'raisin bread model' of the atom?
What is the unit for the charge of a particle?
What is the unit for the charge of a particle?
What is the charge of an electron in atomic mass unit (amu)?
What is the charge of an electron in atomic mass unit (amu)?
Who discovered radioactivity?
Who discovered radioactivity?
What is the charge of an electron in charge unit?
What is the charge of an electron in charge unit?
Who formulated the atomic theory?
Who formulated the atomic theory?
Which of the following is NOT an intensive property of a material?
Which of the following is NOT an intensive property of a material?
The discovery of radioactivity further confirms the existence of subatomic particles. Who discovered radioactivity?
The discovery of radioactivity further confirms the existence of subatomic particles. Who discovered radioactivity?
What is the common unit used to indicate the mass of a particle?
What is the common unit used to indicate the mass of a particle?
Who discovered the electron?
Who discovered the electron?
What is a compound?
What is a compound?
What is an element?
What is an element?
How are mixtures classified?
How are mixtures classified?
What is an example of a suspension?
What is an example of a suspension?
Who discovered the neutron?
Who discovered the neutron?
What are the three states of matter?
What are the three states of matter?
What is a homogeneous mixture of sugar dispersed in water called?
What is a homogeneous mixture of sugar dispersed in water called?
What did Ernest Rutherford discover?
What did Ernest Rutherford discover?
How are substances classified?
How are substances classified?
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Study Notes
Chemistry Basics Summary
- Joseph John Thomson discovered the electron
- Ernest Rutherford discovered the proton
- James Chadwick discovered the neutron
- Matter is anything that occupies space and has mass
- All forms of matter are composed of atoms
- Substances are classified as elements or compounds
- An element is a substance that cannot be broken down into simpler substances
- A compound results from the combination of two or more elements in definite proportion of mass
- Mixtures are classified as suspension, colloids, or solutions
- Soil and water is an example of a suspension
- A homogeneous mixture of sugar dispersed in water is called a solution
- The three states of matter are solid, liquid, and gas
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