Which of the following are physical properties of nonmetals?

• dull

• brittle

• poor conductors

• gaining electrons

• sharing electrons

Answer explanation

Nonmetals include 3 states of matter: liquid, solid, & gases.

Which is true about metalloids?

• They have properties of metals & nonmetals.

• all solids at room temp

• brittle

• somewhat reactive

• used to make semiconductors

Where is the carbon family?

Tags

NGSS.MS-PS1-1

Only ​ (a)   in group ​ (b)   is a ​ (c)   .

• carbon
• 14
• nonmetal

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NGSS.MS-PS1-1

What is a diatomic molecule?

• any chemical compound that is made up of only two atoms.

• A molecule composed of three or more atoms.

• A molecule composed of four different elements.

• A molecule composed of one atom.

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NGSS.MS-PS1-1

Where is the nitrogen family?

Answer explanation

The nitrogen family is a group of elements in the periodic table that includes nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). These elements all have five electrons in their outermost shell and are located in Group 15 of the periodic table.

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NGSS.MS-PS1-1

Where is the oxygen family?

Answer explanation

The oxygen family is a group of elements in the periodic table that includes oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po). These elements all have the same number of valence electrons (six) and are all nonmetals. They are located in Group 16 of the periodic table.

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NGSS.MS-PS1-1

What 3 nonmetals are in the oxygen family?

• oxygen

• sulfur

• selenium

• hydrogen

• helium

Where is the Halogen Family?

(The halides.)

Answer explanation

The Halogen Family is a group of elements in the periodic table located in Group 17 (Group VIIa). These elements are Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At), and Tennessine (Ts). These elements are also known as the halides because they all form compounds with hydrogen called halides.

Tags

NGSS.MS-PS1-1

What is the most reactive element on the periodic table?

• fluorine

• sulfur

• oxygen

• hydrogen

Answer explanation

fluorine (F), most reactive chemical element and the lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. Its chemical activity can be attributed to its extreme ability to attract electrons (it is the most electronegative element) and to the small size of its atoms.