The mass of a mole of NaCl is the ____.

• atomic mass

• molar mass

• gram atomic mass

• molecular mass

What is the definition of a mole in chemistry?

• A small burrowing mammal

• A unit representing 6.02 × 10²³ particles

• The mass of an element in grams

• The volume of a gas at standard conditions

For which of the following conversions does the value of the conversion factor depend upon the formula of the substance?

• moles of any substance to number of particles

• volume of gas (STP) to moles

• density of gas (STP) to molar mass

• mass of any substance to moles

What determines that an element is a metal?

• when it is a Group A element

• its position in the periodic table

• the magnitude of its charge

• the molecules that it forms

Tags

NGSS.HS-PS1-1

What SI unit is used to measure the number of representative particles in a substance?

• mole

• kilogram

• ampere

• kelvin

The molar mass of a substance can be calculated from its density alone, if that substance is a(n) ____.

• element

• liquid

• gas at STP

• solid

An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.

• only two elements

• fewer electrons than protons

• a polyatomic anion

• neutral molecules

What type of ions have names ending in -ide?

• only metal ions

• only gaseous ions

• only anions

• only cations

Avogadro's number of representative particles is equal to one ____.

• kilogram

• mole

• kelvin

• gram

Which of the following is NOT a true about atomic mass?

• The atomic mass is found by checking the periodic table.

• The atomic mass is the number of grams of an element that is numerically equal to the mass in amu.

• The atomic mass is the mass of one mole of atoms.

• The atomic mass is 12 g for magnesium.