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WorksheetsScience atoms/elements quiz
Total questions: 17
Worksheet time: 11mins
The ________________ which are represented by a single uppercase letter, or represented by an uppercase letter followed by a lowercase letter. This tells you the types of elements in the compound.
metals
element symbols
metalloids
nonmetals
How many elements are in this chemical formula?
NaOH
1
2
3
4
How many atoms are in the formula?
NaOH
4
3
2
1
How many elements are in this formula?
HNO3
1
2
3
4
How many elements are in this formula?
Li2O
1
2
3
4
The positive particles of an atom are ___________.
electrons
protons
neutrons
The center of an atom where its neutrons and protons are is called the _____________.
nucleus
electron cloud
center
Identifies the number of protons in an atoms nucleus.
Electron Cloud
Atomic Theory
Atomic Number
Mass Number
All matter is made of _________.
DNA
homogeneous mixture
the composition is uniform throughout the mixture
the composition is different throughout the structure
two or more atoms held together by chemical bonds
A mixture
heterogeneous mixture
something
a mixture of 2 or more different compounds. not uniform throughout the structure
a mixture of substances blended so thoroughly that you cannot see individual substances. Every sample of the mixture will show the same amounts of each substance. Homogeneous mixtures can be solid, liquid, gas, or plasma mixtures.
a made up word
draw a molecule
diatomic molecule
two atoms that are chemically bonded
Electrons can be transferred from one atom to another. Electrons can be shared between neighboring atoms. Electrons can be shared with all atoms in a material.
atom
science class
