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Anything that has mass and takes up space is
Which of the following elements has 14 protons?
Using the diagram, how many electrons would an atom of nickel contain?
How many atoms of sulfur are in H2SO4 (sulfuric acid)?
The basic building block of all matter is —?
Approximately how many known elements have been identified?
A student draws a picture of photosynthesis for a class assignment.
Why does the student use labels like H2O and CO2?
A The student knew the elements could not be written in any other format.
B. The student drew only molecules that couldbe shown with the letter O included.
C.The student included all of the chemicalcombinations from the periodic table in thepicture.
D. The student wants to use the longest way towrite the names of the molecules.
E. The student used the chemical symbol torepresent the elements in each molecule.
Which example best represents a element?
How many neutrons are present in a single atom of Lithium?
The above compound, hydrogen peroxide, is formed by which two elements?
Which example best represents a mixture?
Matter is classified as
A elements, compounds & mixtures.
B solids, liquids & gases.
C atoms, elements & molecules.
D protons, neutrons & electrons.
What is a correct formula for the compound carbon dioxide?
In the above diagram, the force that holds the atoms together is called
Which of the following is composed of only one kind of atom?
A Air
B Hydrogen
C Water
D Sugar
Which of the following is not an example of a physical property of matter?
A Texture
B Flammability
C Boiling Point
D Color
A change in matter that produces a new substance is
Both physical and chemical changes in matter involves a change in
A mass.
B concentration.
C state.
D energy
Determine if it is a physical or chemical change:
burning paper
Determine if it is a physical or chemical change:
souring milk
What is at section 3?
What is at number 1?
what charge does a pronton have?
what charge does a neutron have?
what charge does a electron have?
matter
Silicon
28
1
atoms
100
E
A
4
Hydrogen and oxygen
B
A
CO2
a chemical bond
B
B
chemical change
D
chemical change
chemical change
electron
+ positive
no charge
- negative
