Inquiry BM review

The SI unit for measuring temperature is

• kelvin

• degree

• gram

• mole

The smallest unit of an element that maintains the properties of that element is a(n)

• compound

• substance

• atom

• molecule

You put 1 spoonful of flour into 1 liter of water and stir. The resulting liquid is an example of a(n)

• pure substance

• homogeneous mixture

• heterogeneous mixture

• solution

How many total atoms are in a single molecule of SO₃?

• 1

• 2

• 3

• 4

Decomposition reactions are reactions that

• separate a compound into its original components

• light on fire

• combine simple atoms into compounds

• produce water and a salt

A subatomic particle that has a positive charge is called a(n)

• neutron

• proton

• electron

• element

Which group can the halogen elements be found on the periodic table?

• 18

• 17

• 13

• 2

Two different isotopes of an element have different

• number of protons

• different number of neutrons

• different number of electrons

• different atomic numbers

Two different ions of an element have different

• number of electrons

• number of protons

• number of neutrons

• atomic masses

Elements are this type of matter:

• heterogeneous mixtures

• compound

• pure substance

• homogeneous mixtures