BASIC CHEMISTRY

Which subatomic part of an atom gives it a positive charge?

• Neutron

• Proton

• Electron

• Nucleus

Negatively charged particles found outside of the nucleus of an atom are called ______.

• protons

• neutrons

• electrons

A neutral particle found in the nucleus of an atom

• neutron

• proton

• electron

Tags

NGSS.HS-PS1-8

Which of the following substances contain molecules?

• Zinc

  Zink

• Ethanol

  Etanol

• Sodium chloride

  Natrium klorida

• Magnesium oxide

  Magnesium oksida

The scientist who proposed that the atom consists of electrons orbiting around the nucleus is

• Ernest Rutherford

• James Chadwick

• J.J Thomson

• Neils Bohr

An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?

• 0

• 7

• 6

• 13

Tags

NGSS.HS-PS1-1

An atom of iodine has 7 valence electrons. What will an atom of iodine MOST likely do to be stable?

• Lose 1 electron

• Lost 7 electrons

• Gain 1 electron

• Neither gain nor lose any valence electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom of neon has 8 valence electrons. What will an atom of neon MOST likely do to be stable?

• Gain 1 electron

• Lose 2 electrons

• Lose 8 electrons

• Neither gain nor lose any valence electrons

Tags

NGSS.HS-PS1-1

What type of bond is formed when atoms share electrons?

• Covalent

• Ionic

• Hydrogen

• Polyatomic

Tags

NGSS.HS-PS1-1

Which of the below is NOT a state of matter

• solid

• liquid

• gas

• gel