Unit 7 Science

a periods number on the periodic table correspinds to the number of protons

• electrons an atoms in the period can accept when reacting to the form compounds

• energy levels of the atom in the period

• compounds that may be formed by an element in the period

Tags

NGSS.HS-PS1-1

an example of a chemical property of a substance is its

• melting point

• specific heat

• reaction rate

horizontal rows on the periodic table are called

• periods

• groups

• colums

• boxes

all of the following are characteristics of metals except

• shiny

• good conductors

• ductile

• brittle

characteristics of non-metals include all of the following except

• ductile

• brittle

• poor conductors

• dull

the element that is shiny in appearance, quite dense and liquid at room temperature is

• silver

• aluminum

• mercury

• zinc

of the following, the best insulator is the element

• zinc

• chromium

• sulfur

• magnesium

Tags

NGSS.MS-PS3-3

An element essential to the manufacture of DNA and glow-in-the-dark plastic is

• flourine

• phosphorus

• sulfur

• nitrogen

the most abundant element in earths crust is

• oxygen

• silicon

• carbon

• nitrogen

Tags

NGSS.MS-PS1-1

Elements used to make semiconductors for computers include germanium and

• oxygen

• iron

• carbon

• silicon