Ch 3 Lesson 1&2 Environmental

What are the building blocks of chemistry?

• Proteins

• Atoms and elements

• Water

• Lipids

Tags

NGSS.MS-PS1-1

Which statement best describes an element?

• any combination of two or more atoms of different types
• a pure substance made up of only one kind of atom
• a substance containing only carbon atoms
• any kind of crystal

A(n) ______ is the negatively charged part of an atom.

• A) nucleus

• B) electron

• C) neutron

• proton

A(n) ___________ is a combination of two or more atoms of the same type or of different types joined by covalent bonds.

• • proton

• • element

• • molecule

• solution

Tags

NGSS.MS-PS1-1

A substance composed of atoms of two or more different elements is called a(n)

• covalent bond

• • neutron

• • molecule

• • compound

Tags

NGSS.MS-PS1-1

A mixture in which all the ingredients are evenly distributed is called a(n)

• • solution

• • macromolecule

• • carbohydrate

• • compound

What characteristic best defines a macromolecule?

• Size

• Function

• Life cycle

• Chemical makeup

Which of the following is a macromolecule?

• Water

• Protein

• Electron

• pH

Tags

NGSS.MS-LS3-1

DNA and RNA are the two main types of __________ that carry hereditary information and are responsible for passing traits from parents to offspring.

• • lipids

• • nucleic acids

• • proteins

• • hydrocarbons

All of the following are part of a carbohydrate EXCEPT:

• Carbon

• Oxygen

• Hydrogen

• Phosphorus

Tags

NGSS.HS-LS1-6