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Atoms
Elements
Periodic Table
Matter
Chemical Formulas
100
The number of protons in the ___________ of an atom is the atom's atomic number.
What is nucleus.
100
An ________ is a material that contains only one kind of atom.
What is element.
100
A small particle that makes up most types of matter on Earth
What is atoms.
100
Anything that has mass and takes up space
What is matter.
100
What is the chemical formula for carbon dioxide?
What is CO2
200
Atoms of the same element that have different numbers of neutrons are
What is isotopes.
200
An element that has characteristics of both metals and nonmetals is a
What is metalloid.
200
A pure substance whose smallest unit is made of atoms of more than one element.
What is compound.
200
Two or more substances form a __________ when they come together without forming a new substance
What is mixture.
200
How many hydrogen atoms are in water?
What is 2
300
An atomic particle with no electrical charge is a
What is neutron.
300
Elements that are ___________ are usually shiny and conduct electricity well.
What is metals.
300
Elements that are usually dull in appearance and poor conductors of heat and electricity are
What is nonmetals.
300
Matter that has the same composition and properties throughout is called a
What is substance.
300
What is the chemical formula for sugar?
What is C6H12O6.
400
An atomic particle NOT found in the nucleus is an
What is electron.
400
Many ____________ can conduct heat and electricity, but they are not the best conductors.
What is metalloids.
400
A ___________ is a particle with a positive charge.
What is proton.
400
The periodic table lists all of the
What is elements.
400
What is the symbol for copper?
What is Cu.
500
The number of protons plus the number of neutrons gives the
What is atomic mass.
500
States that matter is neither created nor destroyed, only changed in form.
What is law of conservation of matter.
500
Matter that has an equal amount of positive and negative charge is said to be
What is neutral.
500
A mixture is heterogeneous if what?
What is you can see its individual parts.
500
How many protons does nitrogen have?
What is 7