Science and Physics Quiz

Which subatomic particle determines the identity of an element?

• Proton

• Neutron

• Electron

• Nucleus

An atom has 6 protons and 7 neutrons. What is its mass number?

• 6

• 7

• 13

• 14

Elements in the same group on the periodic table have similar:

• Atomic masses

• Chemical properties

• Atomic numbers

• Numbers of neutrons

What happens to the density of a substance when it changes from a solid to a liquid?

• It increases

• It decreases

• It stays the same

• It doubles

Tags

NGSS.MS-PS1-4

In a chemical equation, what does the arrow (→) represent?

• A mixture is formed

• A reaction occurs

• Energy is absorbed

• Mass is conserved

Tags

NGSS.MS-PS1-2

Which of the following is evidence of a chemical change?

• Ice melting

• Sugar dissolving

• Rust forming

• Water evaporating

Tags

NGSS.MS-PS1-2

How many valence electrons does an atom of oxygen (O) have?

• 2

• 6

• 8

• 10

What is the main source of energy for Earth's climate system?

• Geothermal heat

• The Sun

• Fossil fuels

• Nuclear reactions

Tags

NGSS.MS-ESS2-4

A student mixes two clear liquids, and a solid forms. This is an example of:

• A physical change

• A solution forming

• A precipitate forming

• Evaporation

Tags

NGSS.MS-PS1-2

Which element is a noble gas?

• Nitrogen

• Helium

• Sodium

• Chlorine