1. When an element has a positive charge : a. it gains electrons
b. it loses electrons
c. it gains protons
d. it lose protons

2. When an element has a negative charge :
a. it gains electrons
b. it loses electrons
c. it gains protons
d. it lose protons

3. An element with a positive or negative charge is :
a. an atom
b. an isotope
c. an ion
d. an anion

How does climate change cause the ocean's thermohaline current to slow down?

Glucose (c6h12o6) is an important biological molecule. (round the answer to nearest hundredth.) what is the percent by mass of carbon in glucose?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?