1st Semester Review

What is the definition of matter?

• The smallest particle in a substance

• Something that has mass and takes up space

• How much something weighs

• Something that only goes through a chemical change

Tags

NGSS.HS-PS1-7

A mixture....

• always has a uniform composition

• has different types of matter which retain their properties

What does an elements ATOMIC NUMBER represent?

• number of atoms in its nucleus

• number of protons in its nucleus

What is the formula for lithium sulfide?

• LiS

• Li₂S

• LiS₂

• Li₃S

Which number is the atomic mass?

• 79
• 196.97

An atom's nucleus contains what particles?

• protons and positrons

• protons and neutrinos

• quarks and quasars

• protons and neutrons

Element is a

• pure substance
• compound
• mixture
• molecule

Tags

NGSS.MS-PS1-1

What are the 3 subatomic particles?

• Protons, Electrons, Neurons
• Neutrons, Protons, Electrons
• Solids, Liquids, Gases
• Quarks, Bosons, Positrons

Tags

NGSS.HS-PS1-8

Particles in an atom that are negative 

• molecules 
• electrons 
• neutrons 
• protons 

Solids have a....

• Definite volume, indefinite shape
• Indefinite volume, indefinite shape
• Definite volume, definite shape
• Indefinite volume, definite shape