Matter and Energy

How many different elements are present in H₂COCH₂

• 5

• 4

• 3

• 2

Tags

NGSS.MS-PS1-1

• A
• B
• C
• D

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Which of these best describes what is happening at Location 6?

• F Oceanic plate is being created.

• G Continent is being destroyed.

• H Island is forming.

• J Oceanic crust is being destroyed.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-ESS2-1

a negatively charged particle in the electron cloud surrounding the atomic nucleus

• Electron

• Electrical charge

• Chemical property

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

the negatively charged space containing electrons that surrounds the atomic nucleus

• Electron cloud

• Electron

• Electrical charge

Tags

NGSS.MS-PS1-1

the positively charged center of an atom containing the protons and neutrons

• Nucleus

• Neutron

• Mass number

property of matter that can be observed without changing the composition or identity of the matter

• Physical property

• Periods

• Periodic Table

the formation of a new substance with different properties; cannot be undone by physical means

• Chemical change

• Valence electron(s)

• Subatomic particle

Tags

NGSS.MS-PS1-2

a representation of a molecule or compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element

• Chemical formula

• Chemical equation

• Chemical change

Tags

NGSS.MS-PS1-1

a change caused by the interaction of two or more substances (reactants) resulting in the formation of new substances (products)

• Chemical reaction

• Chemical formula

• Chemical equation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5