PEAS History and Comp of Earth

Scientific Notation

100

Express 80,000 number in scientific notation

8 x 10⁴

200

Express 0.0009 in scientific notation

9 x 10^-4

300

Express 3 x 10^-2 in standard notation

0.03

400

(3x10²) x (2x10¹²)

6 x 10²⁴

500

Divide 

(8x10^11)/(4x10^6)

2x10⁵

Geological Timeline

100

According to scientific evidence, how old is the earth

4.6 Billion years OR 4,600,000,000 OR 4.6x10⁹

200

The first permanent land dwellers appeared on earth 475 million years ago during which chunk of time?

Paleozoic

300

Dinosaurs existed during which era?

Mesozoic

400

Pannotia was a supercontent that broke apart 573 Million Years Ago.  Did this occur during the Precambrian, Paleozoic, or Mesozic time?

Precambrian

500

Pangea existed between 336 to 175 million years ago.  How long did Pangea last?

336 million - 175 million years = 161 million years

Atomic Symbols

100

What three subatomic particles are atoms made of?

Protons, neutrons, electrons

200

If an atom has 12 protons it is what element?

Magnesium (Mg)

300

charge is equal to?

protons - electrons

400

protons + neutrons = ?

mass number

500

How may protons, neutrons, and electrons does this atom have

¹⁸⁰₈₀Hg²⁺

Proton = 80

Neutrons = 180 - 80 = 100

Electrons = 80 - 2 = 78

Isotopes & Ions

100

Isotopes have the same __________ but different __________

First blank: protons or atomic number

Second blank: neutrons or mass number

200

Anions have ________ charges, 

Cations have ________charges

First blank: Negative

Second blank: Positive

300

Does ¹⁸⁰₈₀Hg²⁺ have more protons, more electrons, or the same number of protons and electrons. Explain.

More protons because its positive

400

Write the isotope name of ¹⁸⁰₈₀Hg²⁺ 

Mercury-180

500

What's one isotope of Nitrogen-14 (¹⁴₇N)

^#₇N or Nitrogen-#

# any number greater than or equal to 7, other than 14.

Mixed Bag

100

What are the four chunks of time in the Geological timeline called?

Precambrian, Paleozoic, Mesozoic, Cenozoic

200

Does ¹⁴₇N^3- have more protons, more electrons, or the same number of protons and electrons. Explain.

More electrons because the charge is negative

300

Write the atomic symbol of an atom with 30 protons, 40 neutrons, 30 electrons

⁷⁰₃₀Zn

400

Divide

(9x10^5)/(3x10^-5)

3x10¹⁰

500

How many protons, neutrons, and electrons does this atom have

⁹⁰₅₀Sn^4-

50 protons, 40 neutrons, 54 electrons