Q4 Science test Phy.Sci.Honors

What reaction has the following general formula:

A + CD --> C + AD

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

What reaction has the following general formula:

AB + CD --> CB + AD

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

A chemical change

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

Matter can not be created nor destroyed: it can only be

• Destroyed a little bit
• Invisible
• Transformed, changed
• None of the above

When iron combines chemically with oxygen, they make a new substance called

• rust

• tarnish

• patina

• sodium

Which of the following is a compound?

• zinc (Zn)

• magnesium (Mg)

• sodium chloride (NaCl)

• potassium (K)

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

The number of neutrons in an atom can be found by

• adding the number of neutrons and protons together.

• adding the atomic mass and the atomic number.

• subtratcting the atomic number from the atomic mass.

• subtracting the atomic mass from the atomic number.

___________________ are positively charged particles located in the nucleus of an atom.

• Electrons

• Neutrons

• Protons

• Isotopes