What is the middle of an atom called?
What is the middle of the atom is called the nucleus?
Who first discovered that atoms were real?
Who is JJ Thompson discovered the atom?
Imagine that you remove all the atoms from a table. What remains?
What is nothing would remain if all atoms are removed?
What suggests there is a basic building block of matter?
What is all substances can be broken down into atoms?
True or False: Elements are the building blocks of matter
What is true, elements are the building blocks of matter.
What is particle #1 on the board called?
What is the particle on the outside of the atom is called an electron?
Draw the BOHR Model
What is
What is all matter made up of?
What is all matter is made of up atoms?
Explain why scientists use models of atoms.
What is atoms are too small to be seen. Models can explain how matter behaves. That is why Scientists use models.
When elements combine with other elements, what is that called?
What are compounds are created when elements combine
What is particle #2 on the board called?
What is the positive particle is the middle of an atom is a proton?
What did JJ Thomson discover?
What is the JJ thomson discovered the electron?
Matter is made of atoms that have positive centers of neutrons and protons surrounded by a cloud of negatively charged electrons. This statement is _________.
What is the atomic theory?
Describe the modern atomic model.
What is the modern atomic model has a nucleus that contains both protons and neutrons surrounded by a cloud of negative electrons.
True or False: elements are a mixture of atoms?
What is False, Elements are not a mixture of atoms.
What is particle #3 on the board called?
What is the neutral particle in the middle of an atom is a neutron?
What is the basic difference among the early atomic models?
What is the basic difference among the early atomic models was the location of the electrons.
What is the modern atomic model?
What is atoms have a nucleus that contains both protons and neutrons surrounded by a cloud of electrons?
What subatomic particle determines the identity of an atom?
What is the proton?
Elements are also known as simple pure what?
What is Elements are known as simple pure substances?
Explain why neutrons exist
What is neutrons exist to keep protons in the middle of an atom and to keep them packed tightly together. Protons are positive and without neutrons an atom would fall apart.
What did James Chadwick discover?
What is James Chadwick discovered the neutron?
Why is an atom neutral?
What is the number of protons in an atom equals the number of electrons. The positive charge of the protons balance the negative charge of the electrons making the atom neutral.
How do you find the number of neutrons in an atom?
What is you subtract you the atomic mass from the atomic number to find the number of neutrons?
The study of matter and how matter changes is called
What is chemistry is the study of matter and how it changes.