Atoms
Elements
Molecules
Compounds
Mystery
100
Atoms are composed of these 3 subatomic particles?
What is protons, neutrons, and electrons?
100
Substance made up of only one kind of atom.
What is an element?
100
Two hydrogen atoms and one oxygen molecule make up one molecule of this.
What is one molecule of water?
100
The chemical formula for table salt.
What is NaCl?
100

Mass per unit volume.

What is density?

200
Particle with a neutral charge in an atom.
What is a neutron?
200
H is the chemical symbol for this element.
What is hydrogen?
200
The number of sodium atom in table salt. Hint: the symbol for table salt is NaCl
What is 1 sodium atom?
200
The chemical symbol for water.
What is H2O?
200
The 3 states of matter.
What is solid, liquid, gas?
300
Center of the atom that makes up most of the atom's mass.
What is the nucleus?
300
Chart used by scientist to list all the elements.
What is the periodic table?
300
All matter in the universe can be described as this.
What is atoms or molecules?
300
The 2 in the chemical formula H2O means this.
What is two atoms of hydrogen?
300
The term used to describe the point at which a solid becomes a liquid.
What is the melting point?
400
Particles located in the nucleus of an atom.
What is protons and neutrons?
400
The number of hyrogen atoms in a molecule of H2.
What is two?
400
The definition of a molecule.
What is a particle that contains more than one atom joined together?
400
The chemical formula for carbon dioxide.
What is CO2?
400

It has the fastest particles.

What is a gas?

500
The number of protons a hydrogen atom has.
What is 1 proton?
500
The element with atomic number 6.
What is carbon?
500
The number of carbon atoms in carbon dioxide.
What is one?
500
The definition of a compound.
What is two or more different atoms joined together?
500

You can use your senses or a tool to observe or measure them.

What are the physical properties of matter?

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