Post 4 Practice Phy Sci

Which element has similar chemical properties as Neon and Argon?

• F

• Kr

• Cl

• Mg

• Li

Which element has similar chemical properties as Beryllium and Calcium?

• F

• Kr

• Cl

• Mg

• Li

Using the partial periodic table, which statement is correct?

• Oxygen (O) has more protons than chlorine (Cl)

• Iron (Fe) has more protons than silver (Ag)

• Sodium (Na) has more protons than carbon (C)

• Hydrogen (H) has more protons than helium (He)

Tags

NGSS.MS-PS1-1

The position of an element on the periodic table helps scientists predict the number of electrons an atom will gain or lose during ion formation. According to the periodic table of the elements, which element is most likely to gain two electrons when it forms an ion?

• Ca

• Hg

• O

• I

Which of the following distinguishes the isotope uranium-238 from the isotope uranium-235?

• number of neutrons in the nucleus

• location on the periodic table

• amount of negative charge

• ability to form ions

Tags

NGSS.HS-PS1-8

An atom of beryllium has 4 protons, 4 electrons, and 5 neutrons. What is its mass number?

• 4

• 5

• 8

• 9

Tags

NGSS.MS-PS1-1

Which statements are correct about the marked elements? (Choose 2)

• A. Neon (Ne) does not have any valence electrons.

• B. Beryllium (Be) has two valence electrons.

• C. Sodium (Na) has one valence electron more than neon (Ne)

• D. Chlorine (Cl) has one valence electron less than neon (Ne)

Tags

NGSS.MS-PS1-1

Nitrogen has five valence electrons. For this reason, it often bonds to gain three electrons. Based on the arrangement of the elements in the periodic table, which other element most likely shows similar behavior?

• Ne

• C

• O

• P

An atom has an atomic number of 11 (don't forget this is proton number also), an atomic mass of 23 and has 12 electrons. Which of the following describes the atom?

• It has no charge.

• It is a neutral atom.

• It has a charge of +1.

• It is an ion.

• It has a charge of -1.

An alpha particle that is emitted as nuclear radiation has the same structure as a

• hydrogen nucleus.

• helium nucleus.

• neutron.

• electron.

Tags

NGSS.HS-PS1-8