Atoms and Molecules

Which statement about atoms is true?

• Atoms combine to make all the substances on Earth.

• Atoms are made up of smaller particles called molecules.

• Atoms come in different sizes, but most are visible using a simple hand lens.

• Atoms combine to make larger subatomic particles.

Tags

NGSS.MS-PS1-1

Fill in the blank with the charge for the given particle.

Electron is _______.

Fill in the blank with the charge of the given particle.

Proton is _______.

Fill in the blank with the charge of the given particle.

Neutron is _______.

Compared to the charge and mass of a proton, an electron has ___________________.

• the same charge as a proton, but a smaller mass than a proton.

• the same charge and the same mass as a proton.

• a different charge than a proton and a smaller mass than a proton

• a different charge than a proton, but the same mass as a proton.

The total number of electrons in a neutral atom of every element is always equal to the atom's ________________________.

• atomic mass number

• number of neutrons

• number of shells

• number of protons

The atomic mass is equal to which two items added together?

• Protons

• Neutrons

• Electrons

• Atom

• Electron Shells

Tags

NGSS.MS-PS1-1

Look at the information on the element box below to answer the following questions.

Atomic Number:___

Tags

NGSS.MS-PS1-1

Look at the information on the element box below to answer the following questions.

Atomic Mass:_____

Tags

NGSS.MS-PS1-1

Look at the information on the element box below to answer the following questions.

Number of Protons:___

Tags

NGSS.MS-PS1-1