On the periodic table, elements become more metallic as you move from left to right across a row, and top to bottom down a column. True

False

Which groups/families are known to have low melting points?

Transition Metals

Alkaline Earth Metals

Halogens

Alkali Metals

Nobel Gases
Scale is defined as how big something is

True

False
How many chlorine atoms are in one molecule of NaCl?

A. 1

B. 0

C. 2

D. Molecules don't have atoms

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons