Question

multiple choice
write the letter of the correct answer on the line at the top
1 which is a physical property?
a. color
b. ability to burn
c. ability to rust
2 an atom
a. is the largest piece of matter
b. is made up of compounds.
c. is a particle of an element.
3 a chemical bond is
a. a physical property.
b. the smallest piece of matter.
c. the force that holds atoms together
4 a compound
a. is the same as a mixture.
b. has the same properties as the elements it is made of
c. has different properties from the elements it is made of
5 the parts of a mixture
a. cannot be separated
b. are easily separated
c. have new properties after they are mixed
6 the amount of matter in an object is its
a. mass.
b. weight.
c. volume
7 groups of atoms held together by chemical bonds form
a. mixtures.
b. molecules.
c. solutions.
d. energy.

Explanation:

1. Physical properties are characteristics that can be observed without changing the substance's chemical identity. Color is a physical property, while the ability to burn and rust are chemical properties.
2. An atom is the smallest particle of an element that retains the chemical properties of that element.
3. A chemical bond is the force that holds atoms together in a compound.
4. A compound has different properties from the elements it is made of due to the chemical - bonding and arrangement of atoms.
5. The parts of a mixture can usually be separated by physical means.
6. Mass is the amount of matter in an object. Weight depends on gravity, and volume is the amount of space an object occupies.
7. Molecules are groups of atoms held together by chemical bonds.

Answer:

1. a
2. c
3. c
4. c
5. b
6. a
7. b