Metalloids are elements that

a. do not form compounds.

b. can conduct heat and electricity under certain conditions.

c. have large atomic masses but small atomic numbers.

d. are extremely hard.

What are the charges on the three subatomic particles that make up an atom? Explain with short answer.

How can peter best use the beads to show how compounds form in nature

What do you notice about the reactivity of an element and the number of valence electrons it have?

Renewable energy is energy that - will not run out - will not increase in cost - will not cause pollution - can be recycled

While studying chemical and physical changes, students added salt to a glass of water. They stirred the salt until it dissolved and could no longer be seen. "That's a chemical change," Sarah stated. Do you agree? Explain.

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?

A 126-gram sample of titanium metal is heated from 20.0°C to 45.4°C while absorbing 1.68 kJ of heat. What is the specific heat of titanium?

What pressure (in atm) will a sample of o2 gas occupy at 100.0 ml, if o2 has a volume of 25.00 ml at 2.0 atm?

What happens when francium and nitrogen are mixed

Which type of chemical reaction occurs in 2KClO3 Right arrow. 2KCl + 3O2