Atoms

A neutrally charged atom has 29 protons and an atomic mass of 64. How many neutrons does this atom have?

• 29

• 64

• 35

• can't tell how many neutrons based on the information

What types of subatomic particles are found in the nucleus of an atom?

• Only negatively charged particles

• Both neutrally and positively charged particles

• Only neutral particles

• The nucleus of an atom does not contain subatomic particles.

Which of the following best describes a proton?

• A subatomic particle that is very, very small and has a negative charge.

• A positively charged subatomic particle that is found in a cloud around the nucleus of an atom.

• A neutral particle found in the nucleus of an atom.

• A positively charge subatomic particle found in the nucleus of an atom.

What is the significance of the periodic table of elements?

• It lists all the different metals known to humans

• It predicts and lists all the chemical elements in the universe

• It explains where different atoms can be found

• It proves that atoms are the building blocks of matter.

Which of the following is an example of a subatomic particle?

• Carbon

• Oxygen

• Electron

• Hydrogen

In the following diagram, what does the number 12 represent.

• An atomic number

• A number of electrons

• An atomic mass

• The element

True or False: The nucleus contain protons and neutrons

• True

• False

True or False: The atomic number tells how many neutrons an atom has.

• True

• False

True or False: Atoms contain empty space

• True

• False

True or False: Electrons are bigger (heavier) than neutrons

• True

• False