Is ammonia acidic or alkaline?

A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occurred during his experiment? The powder catches on fire. The powder releases bubbles. The powder heats up.

Which of the following is directly responsible for an acquired trait? environment phenotype genotype chromosomes

How many ounces are in a liter?

Can a physical change actually change what a substance is?

Find the product. (n + 8) (n - 2) n2 - 6n - 16 n2 + 6n - 16 n2 - 6n + 16

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container.

Why is fluorine a gas?

What is the empirical formula for a compound if a sample contains 3.72g of p and 21.28g of cl?-pcl5-pcl3-p2cl10-p2cl5

Use the equation 2HgO--> 2Hg+O2 to find how many moles of mercury are produced if 27 g of oxygen are produced. 2.1 1.3 2.6 2.4

How much mass does an electron, proton, and neutron have?