Atomic Structure Check

The atomic number identifies the number of __________.

• electrons

• atoms

• protons

• neutrons

Subatomic particles with a negative charge are called ____.

• electrons

• protons

• quarks

• neutrons

How many protons does sulfur have?

• 32

• 16

• 48

• 12

Tags

NGSS.MS-PS1-1

Subatomic particles with a positive charge are called ____.

• electron

• poitron

• neutron

• proton

The center of an atom is called the ________________.

• electron cloud

• nucleus

• neutrion

• nuetron

In a neutral atom, the number of protons is equal to the number of ____________.

• energy levels

• neutrons

• neurons

• electrons

A neutral atom of germanium has an atomic number of 32 and a mass number of 73. It contains

• 32 protons, 73 electrons, 32 neutrons

• 32 protons, 32 electron, 64 neutrons

• 32 protons, 32 electrons, 41 neutrons

• 73 protons, 73 electrons, 41 neutrons

Isotopes are atoms of the same element that have different

• atomic numbers

• mass numbers

• chemical properties

• number of electrons

What is the Law of Conservation of mass?

• Mass is created in a chemical reaction
• Mass is created in a physical change
• New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
• Mass is never created or destroyed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What do these isotopes of carbon all have in common?

• neutrons & mass number
• atomic number and neutrons
• atomic number and electrons
• protons, atomic number, and mass number

Tags

NGSS.MS-PS1-1