Identify
Anything that takes up space and has mass.
Matter
The tiny, extremely dense core at center of an atom.
Nucleus
The densest of everyday metals is ____?
Lead
The halogen that is added to toothpaste and drinking water is ______?
Fluorine
Iodine, when heated, does not melt but instead sublimes, or turns to gas.
True
The Measure of the pull of gravity on an object.
Weight
The tiny particles that swarm at a tremendous speeds around the core of an atom.
Electrons
The semimetal that is used to make computer chips is called ____?
Silicon
The halogen that is useful as a bleach and a germ-killing agent is _____?
Chlorine
The proton has a negative charge.
Positive
The amount of matter that makes up an object.
Mass
The metric unit that is used to measure an object's mass.
Gram or kilograms
The only metal that is liquid at room temperature______?
Mercury
The halogen that is added to table salt to prevent a deficiency disease is ______?
Iodine
A neutral atom has an equal number of protons and electrons
True
The amount of matter in one unit of volume.
Density
The two particles that make up the nucleus of an atom.
Protons and Neutrons
The element that is the basic building block of all compounds is ______?
Carbon
The colorless, odorless gas that makes up 78% of the earth's atmosphere is _______?
Nitrogen
Two electrons attract each other.
Repel
The tiny particles of which all matter is composed.
Atoms
Most metals are _____?
Solid
A very hard metal which is an important ingredient in stainless steel is ____?
Nickel
A compound made of charged atoms.
Ionic compound
Two or more atoms firmly bound together form a neutron.
Molecule