Chemistry Ch. 3 Vocab

Law of conservation of mass states that 

• matter is created
• matter is destroyed
• matter is neither created nor destroyed
• matter does not change

Tags

NGSS.MS-PS1-5

REACTANTS are always on what side of the chemical equation?

• right
• left
• top
• bottom

Tags

NGSS.MS-PS1-5

Which of the following are PRODUCTS?
H₂O + CO₂ → HCO + HO

• H₂O and CO₂
• HCO and HO
• H₂O ONLY
• HCO ONLY

Tags

NGSS.MS-PS1-2

PRODUCTS are always on what side of the equation?

• right
• left
• top
• bottom

Mass is neither created nor destroyed during chemical reactions or physical changes.

• Law of multiple proportions

• law of definite proportions

• law of scientific theory

• law of conservation of mass

Tags

NGSS.MS-PS1-5

States that, regardless of the amount, a compound is always composed of the same elements in the same proportion by mass

• Law of definite proportions

• Law of conservation of mass

• Law of multiple proportions

• periodic table

States that when different compounds are formed by the combination of the same elements, different masses of one element combine with the same mass of the other element in a ratio of small whole numbers

• Law of multiple proportions

• Law of definite proportions

• Law of conservation of mass

• percent by mass

the smallest particle of an element that retains the chemical properties of that element

• ion
• isotope
• atom
• element

Tags

NGSS.MS-PS1-1

This is the total number of protons and neutrons in an atom.

• atomic number
• mass number
• avg. atomic mass

This number gives the number of protons in each atom of an element.

• mass number
• atomic number 
• atomic mass

Tags

NGSS.HS-PS1-7