Podcast
Questions and Answers
Which element is considered the least reactive according to the given information?
Which element is considered the least reactive according to the given information?
- Lithium
- Calcium
- Copper (correct)
- Sodium
Who is credited as the father of the periodic table?
Who is credited as the father of the periodic table?
- Dmitri Mendeleev (correct)
- John Newlands
- Johann Dobereiner
- John Dalton
What does the atomic number on the left side of the element symbol represent?
What does the atomic number on the left side of the element symbol represent?
- The number of electrons
- The atomic mass
- The number of neutrons
- The number of protons (correct)
Which scientist proposed the electron cloud model, also known as the orbital model?
Which scientist proposed the electron cloud model, also known as the orbital model?
What is the process called when a substance changes from a liquid to a gas while gaining energy?
What is the process called when a substance changes from a liquid to a gas while gaining energy?
Which of the following is a pure substance?
Which of the following is a pure substance?
What is the term used to describe the ability of a material to allow heat to flow?
What is the term used to describe the ability of a material to allow heat to flow?
Which of the following is a property that describes how readily a substance combines with other substances?
Which of the following is a property that describes how readily a substance combines with other substances?
What is the process called when a substance changes from a solid to a gas while gaining energy?
What is the process called when a substance changes from a solid to a gas while gaining energy?
Which scientist is credited as the 'father of the periodic table'?
Which scientist is credited as the 'father of the periodic table'?
What is the term used to describe a combination of two or more substances that are not chemically combined?
What is the term used to describe a combination of two or more substances that are not chemically combined?
What is the term used to describe the measurement of the gravitational force acting on an object?
What is the term used to describe the measurement of the gravitational force acting on an object?
What is the name of the model proposed by Erwin Schrödinger that describes the electron as an 'electron cloud'?
What is the name of the model proposed by Erwin Schrödinger that describes the electron as an 'electron cloud'?
Which of the following is considered the 'simplest form of matter' that cannot be broken down into simpler substances?
Which of the following is considered the 'simplest form of matter' that cannot be broken down into simpler substances?
What is the term used to describe the movement of atoms, as mentioned in the text?
What is the term used to describe the movement of atoms, as mentioned in the text?
Which scientist is credited with proposing the 'electron, plum-pudding model'?
Which scientist is credited with proposing the 'electron, plum-pudding model'?
