Download presentation

Presentation is loading. Please wait.

Published byDominic Hart Modified over 2 years ago

1
Solving atomic calculations: Working with: – Elements – Isotopes – Ions – Atomic # – Atomic mass – Charge

2
THE BASICS: Elements, Isotopes, and Ions 1. ELEMENTS: are atoms with the same # of protons (same Atomic #) 2. ISOTOPES ( mass ): are atoms of the same element with a particular # of neutrons ( electrons aren’t involved ) 3. IONS ( charge ): are atoms of the same element with a particular # of electrons ( neutrons aren’t involved )

3
Elements, Isotopes, and Ions REMEMBER: -protons: -have a charge of +1, so they are involved in determining ions (atoms of a particular charge) -have a mass of 1, so they are involved in determining isotopes (atoms of a particular mass)

4
REMEMBER: -neutrons: -have a charge of 0, so they are NOT involved in determining ions (atoms of a particular charge) -have a mass of 1, so they are involved in determining isotopes (atoms of a particular mass)

5
REMEMBER: -electrons: -have a charge of -1, so they are involved in determining ions (atoms of a particular charge) -have a mass of almost 0, so they are NOT involved in determining isotopes (atoms of a particular mass)

6
CALCULATIONS MASS NUMBER: – Is the total mass of a certain ISOTOPE of an element. 1. How to calculate mass #: # of protons + # of neutrons = mass # 2. How to calculate # of neutrons from mass #: (Mass #) – (atomic #) = # of neutrons ↕ ↕ ↕ (# of P + # of N) – (# of P) = # of N

7
CALCULATIONS CHARGE, OR IONS: – Is the total charge (+ or - ) of a certain ION of an element. 1. How to calculate charge: Difference between the # of protons & # of electrons = charge of an ion 2. How to calculate # of neutrons from mass #: (+ Protons ) + (- electrons) = charge Ex.: + 5p + ( - 3e) = +2OR + 5 p - - 3e = 2, since there’s more p’s than e’s, its +2

8
CALCULATIONS: ATOMIC # FROM OTHER INFORMATION: 1. From the charge: Ex.: if an atom has a charge of +2, and has 6 - electrons, its Atomic # = 8 (+2 means it has 2 more + protons than - electrons; (+2) + (6 electrons) = 8 protons = atomic # 8) 2. from # of neutrons and the mass #: (Mass #) – (# of neutrons) = atomic # ↕ ↕ ↕ (# of P + # of N) – (# of neutrons) = (# of P)

Similar presentations

Presentation is loading. Please wait....

OK

4.3: HOW ATOMS DIFFER ATOMIC NUMBER

4.3: HOW ATOMS DIFFER ATOMIC NUMBER

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Convert pdf to ppt on mac Ppt on environmental chemistry class 11 Download ppt on nutrition in plants and animals Ppt on hdfc bank Ppt on nitrogen cycle and nitrogen fixation in plants Download ppt on naxalism in india Ppt on marie curie's daughter Ppt on ram and rom images Ppt on number theory Ppt on review writing for second