Podcast
Questions and Answers
What is the definition of an atom?
What is the definition of an atom?
- A unit of measurement for elements
- A combination of different subatomic particles
- The smallest unit of matter that still holds the properties of an element (correct)
- A type of matter that has mass and takes up space
How many elements are there in total?
How many elements are there in total?
- 200
- 118 (correct)
- 50
- 10
What is the approximate size of an atom?
What is the approximate size of an atom?
- $10^{-2}$ meters
- $10^{-5}$ meters
- $10^{3}$ meters
- $10^{-10}$ meters (correct)
Which subatomic particle is positively charged?
Which subatomic particle is positively charged?
What is the mass of a proton in atomic mass units (amu)?
What is the mass of a proton in atomic mass units (amu)?
How many main types of subatomic particles are there?
How many main types of subatomic particles are there?
Why are atomic mass units (amu) used to measure subatomic particles?
Why are atomic mass units (amu) used to measure subatomic particles?
What defines an atom as a specific element?
What defines an atom as a specific element?
Which subatomic particle has a negative charge?
Which subatomic particle has a negative charge?
What type of bond is formed when two atoms share electrons?
What type of bond is formed when two atoms share electrons?
Which subatomic particle's number can change during nuclear reactions?
Which subatomic particle's number can change during nuclear reactions?
What is the total mass of an atom equal to?
What is the total mass of an atom equal to?
Which subatomic particle is located in the nucleus and has no charge?
Which subatomic particle is located in the nucleus and has no charge?
What do atoms with a different number of neutrons than average become known as?
What do atoms with a different number of neutrons than average become known as?
What determines an element's position in the periodic table?
What determines an element's position in the periodic table?
