Mallory combines two chemicals and notices that each chemical retains its original properties. What did Mallory form? O a mixture
a compound
an element
an atom

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

Which substances have the lowest melting points: ionic covalent, or metallic

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.