Answer:
constant appearance
Explanation:
this mean that a pure substance will have a constant appearance ,colour,density ,melting point and boiling point
Answer:
ionic bond
Explanation:
calcium is a metal and oxygen is a nonmetal. Ionic bonds occur between a metal and a nonmetal while covalent bonds occur between two nonmetals.
Answer:
when atoms lose or gain electrons
Explanation:
Answer:
C
Explanation:
because its half life is shorter than the subsequent ones
Answer:
The loaded ship will weigh more. Thus it will sink down farther in the water in order to displace that much more water so that it continues to float.
