What are possible effects of long-term environmental changes? Check all that apply.

adaptation

extinction

migration

speciation

starvation

Lithium has one valence electron. Bromine has seven valence electrons. How might they form a covalent bond? A. Bromine donates seven electron to lithium B. Bromine donates an electron to lithium C. Lithium donates seven electrons to Bromine D.

Why is the Iron symble on the periodic table Fe?

1. Which of the following are considered pure substances heterogeneous mixtures homogenous mixtures elements only elements and compounds 2. Ionic compounds are often formed when a metal atom bonds with a nonmetal atom.

Theres this really cute boy in my science class and i asked him if he wanted to be my lab partner and he said yes he doesn't talk to anyone else how do I know if he likes me ... ?

What is the mass in grams of 1.24 mol of water h2o

Calculate the mass of a 0.255-ml sample of a liquid with density 0.660 g/ml.

Which statement correctly describes the interaction between magnetic poles? North and south poles attract each other. North and south poles repel each other. Two north poles will attract each other. Two south poles will attract each other.

You are measuring the mass of various shapes objecys and identifying their shaped ypu then record the qualitative and quanatitave data in a table is qualitataive wnd which is quatitaive

A positively charged wire is attracted to a negatively charged piece of metal. What force causes this?

Two identical atoms from Area B bond together. What type of bond will they most likely form A. Electrostatic B. Metallic C. Ionic D. Covalent