Chemistry Midterm ACC

Chemistry

• D=m/v
• Neutral group of atoms held by covalent bonds, like C,P,N,H,S,I,Br,Cl,O,F
• Study of the composition of matter, A PHYSICAL SCIENCE
• energy in crystals for ionic bond

Tags

NGSS.HS-PS1-3

Weight

• Earth's attraction or gravitational pull
• Geometric arrangement or molecules
• A measure of the ability of an atom to attract electrons
• energy required to break a bond

Tags

NGSS.HS-PS2-4

Mass

• Sea of electrons
• 3s orbital has more energy
• Has matter, never changes
• An electron occupies the lowest-energy level

Tags

NGSS.HS-PS1-7

Potential Energy

• What all experiments begin as, REACTION STARTS AS POTENTIAL
• Protons + Neutrons
• C=1X4e-=4e-
• covalent bonding with positive sharing with negative charge

Tags

NGSS.HS-PS1-4

4 reasons one knows a chemical reaction has occurred

• Color Change, Precipitate, Heat Energy (Absorb/Given Off), Gas Given Off
• Ne^+
• Study of the composition of matter, A PHYSICAL SCIENCE
• F=nonmetallic, going across period more -/ smaller

hetergenous mixture example

• energy in crystals for ionic bonding
• unequal positive 2 negative charge like H-Cl-H^+
• N=2X5e-=10e-
• soil

homogeneous mixture example

• the energy needed to remove an electron or ion
• Ab^2
• air, alike throughout mixture
• sodium chloride

Number of Sig Figs - 140

• 2
• atomic mass
• 100
• .46

Number of Sig Figs - 200

• 1
• Ne
• Outer shell electrons of each element
• N=2X5e-=10e-

Tags

NGSS.HS-PS1-1

Number of Sig Figs - 200.

• 3
• 2
• either positive or negative
• 16 orbitals