Review Chemistry Quiz

What is the purpose of using significant figures in measurements?

• To simplify the numbers used in calculations

• To indicate the precision of a measurement

• To make calculations easier

• To increase the value of measurements

Tags

NGSS.HS-PS3-1

Which of the following is an example of a number written in scientific notation?

• 3.45

• 34500

• 345 x 10^2

• 3.45 x 10^2

What does the periodic table organize?

• Physical laws

• Mathematical formulas

• Chemical elements

• Biological cells

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Which trend increases as you move from left to right across a period in the periodic table?

• Atomic radius

• Electronegativity

• Metallic character

• Number of neutrons

Who is credited with the development of the first periodic table?

• Dmitri Mendeleev

• Niels Bohr

• Isaac Newton

• Albert Einstein

What are the three main subatomic particles of an atom?

• Proton, Neutron, Electron

• Neutron, Quark, Positron

• Proton, Electron, Isotope

• Electron, Neutrino, Quark

What makes isotopes of an element different from each other?

• Electron configuration

• Number of neutrons

• Number of electrons

• Number of protons

What is the main focus of thermochemistry?

• The conservation of mass in reactions

• The study of heat changes in chemical reactions

• The configuration of electrons in atoms

• The structure of the periodic table

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-1

What does the conservation of energy principle state?

• Energy is converted into mass

• Energy can neither be created nor destroyed

• Energy is always lost when work is done

• Energy can be created but not destroyed

Tags

NGSS.HS-PS3-4

What do Lewis diagrams represent?

• The isotopes of an element

• The energy levels of electrons

• The valence electrons of atoms

• The nucleus of an atom

Tags

NGSS.HS-PS1-2