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Reyna Mccall
ChemistryChemistry
If the number of neutrons in an atom is changed, does the atom become a new element? Why or why not? a. Yes. The number of neutrons determines the identity of an atom b. Yes. The number of neutrons determines the number of electrons in an atom, and therefore, the identity of the element. c. No. It is the number of protons, not the number of neutrons, that determines the identity of an atom. d. No. It is the number of electrons, not the number of neutrons that determines the identity of an atom.
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Jesse Snow
ChemistryChemistry
What must be true for diffusion of a solute to occur across a partition that separates two compartments?
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Kamryn
ChemistryChemistry
Salt dissolving in water is what type of property?
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Champ
ChemistryChemistry
Give an example of a model used in science that is larger than the real object and an example of model that is smaller than the real object
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Lea Harrison
ChemistryChemistry
What happens to the conductivity of water when a base is dissolved in it
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Elyse Glover
ChemistryChemistry
Henry Moseley organized the periodic table by A. atomic weight. B. atomic number. C. electronegativity. D. overall charge of atoms.
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Sarai Reynolds
ChemistryChemistry
What happens when elements chemically combine?

A.) All elements retain their original properties

B.) New properties are former

C.) Only metals retain their original properties

D.) New elements are formed
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Oliver Smith
ChemistryChemistry
Which element consists of positive ions immersed in a "sea" of mobile electronsa) sulfur

b. nitrogen

c. calcium

d. chlorine?
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Robertson
ChemistryChemistry
1.87e3 m + 24 m + 5.43e-1 km + 1.561e2 km = km
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Luciana Berry
ChemistryChemistry
Which

2 continents have the most obvious fit of the coastlines.

subject science
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Katrina Weeks
ChemistryChemistry
A substance with a ph of 6 is called
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Brayan Christian
ChemistryChemistry
56 Explain, in terms of atomic structure, why the elements in Group 2 have similar

chemical properties. 131
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Kenyon Zhang
ChemistryChemistry
What must molecules do to react?

a. Molecules must heat up

b. Molecules must collide

c. Molecules must expand to fill their container

d. Molecules must interact with a catalyst
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Conor Knapp
ChemistryChemistry
How many pictograms are in a gram?
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Ryann Mclean
ChemistryChemistry
Which type of signaling pathway uses second messengers because the hormone cannot pass through the plasma membrane?

a.) amino acid based

b.) lipid based
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