Unit II Chemistry of Life - day 1 review

Which of the following describes chemistry? (check all that apply)

• study of the composition and properties of

  matter

• study of thermodynamics

• includes the study of the energy transformations that accompany changes in the basic structure of matter

• includes the study of motion and mechanics

What are the two basic components of the physical world? (Check all that apply.)

• motion

• matter

• elements

• energy

What are the three states of matter?

• gas

• solid

• liquid

• elements

The isotopes of an element all have the same number of:

• electrons
• neutrons
• protons

A chemical ________ is a pure substance made entirely of 1 type of atom.

• element
• compound
• mixture
• blend

Tags

NGSS.HS-PS1-1

The nucleus of an atom usually contains:

• protons and neutrons
• electrons
• electrons and protons
• isotopes

Tags

NGSS.HS-PS1-8

The main types of chemical bonds are:

• ionic and subliminal
• covalent and hydrogenated
• ionic and covalent
• ionic and flourite

Tags

NGSS.HS-PS1-4

A covalent bond is the result of 

• transferring electrons
• sharing a proton pair
• sharing an electron pair
• transferring protons

What is the smallest unit of matter that cannot be broken down by chemical means?

• Atom
• Element
• Ion
• Isotope

Which subatomic particle has a positive charge?

• proton

• nuetron

• electron

• atom