The Chemical Foundation of Life Quiz lect 2/3

What is the definition of matter?

• Forms of matter with unique chemical and physical properties

• Smallest unit retaining all properties of an element

• Substance that occupies space and has mass

• Different forms of an element with the same number of protons

Tags

NGSS.MS-PS1-5

What is an element?

• A substance that occupies space and has mass

• A charged atom

• Forms of matter with unique chemical and physical properties

• A molecule that possesses the same molecular formula but different structures

What is the charge of a cation?

• Neutral

• No charge

• Positive

• Negative

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the atomic number of Carbon-12?

• 6

• 12

• 14

• 8

How many electrons can the 1n shell accommodate?

• 6

• 4

• 8

• 2

What type of bond is formed when two atoms share electrons?

• Metallic bond

• Hydrogen bond

• Ionic bond

• Covalent bond

Which of the following is a polar molecule?

• O2

• H2O

• CH4

• N2

What is a characteristic of non-polar covalent bonds?

• Electrons are transferred

• Electrons are shared equally

• Electrons are not involved

• Electrons are shared unequally

Tags

NGSS.HS-PS1-1

Which atom is most important in biological molecules?

• Hydrogen

• Carbon

• Nitrogen

• Oxygen