T1 Exam Review 23-24

Which of the following units measures pressure?

• Look at Table D

• Kilograms (kg)

• Kilopascals (kPa)

• Kiloliter (kL)

• Kilometer (km)

What type of matter can be separated chemically?

• Mixture

• Compound

• Element

Tags

NGSS.MS-PS1-5

How many days are required for 200g of radon-222 to decay to 50g?

(Round your answer to the 100th's place)

(a)  

Tags

NGSS.HS-PS1-8

Which electron confiiguration represents sodium in the excited state?

• 2-8-2

• 2-7-2

• 2-8-1

• 2-8

Tags

NGSS.HS-PS1-1

Which of the following contains the least amount of heat?

• • 1 kL of water at 30°C

• • 1 mL of water at 80°C

• • 1 kL of water at 80°C

• • 1 mL of water at 30°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Explain in terms of BOTH protons and neutrons, why Co-59 and Co-60 are isotopes of cobalt.

Answer explanation

same number of protons, different number of neutrons

Compare the penetrating power of the beta and gamma radiation.

Answer explanation

• gamma is more penetrating than beta

or

beta is less penetrating than gamma

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A bottled water label list the ions dissolved in the water.  The table below lists the mass of some ions dissolved in a 500.-grams sample of the bottled water.

Show a numerical setup for calculating the parts per million of the Na⁺ ions in the 500.-gram sample of the bottled water.

Answer explanation

(part / whole) x 1,000,000

(0.0033g/500.g)  X 1,000,000

Tags

NGSS.MS-PS1-2

Which particles are found in the nucleus of an argon atom?

• neutrons and electrons

• protons and electrons

• protons and neutrons

In the ground state, an atom of which element has seven valence electrons?

(Valence electrons are the last number in the electron configuration)

• sodium

• phosphorous

• nitrogen

•   fluorine