What can elements be classified as?

Mars is 7AU from earth, what is that in mm

Explain the difference between percent abundance and relative abundance.

3. Explain the following giving examples (a) Saturated solution (b) Pure substance (c) Suspension

If a drop of blood is 0.05ml how many drops of blood are in a blood collection tube that holds 2ml?

Organisms can reproduce asexually or sexually. All BUT ONE of the steps below is involved in sexual reproduction. Which step describes asexual rather than sexual reproduction? The sperm fertilizes the egg to produce a zygote.

Model describe how you would show j. j. thomson's model of the atom using small beads and clay

Switching one substance for another is called ... ? a) displacement b) synthesis c) decomposition d) oxidation

C2h4 + O2 - CO2 + H2O If we start with 20 grams of CH4, how many moles of CO2 will form?

How does chemical energy relate to the atom and how can we use it?

A positively charged atom is known as a cation. A cation will? ... A) have more protons B) have to same number of protons and electrons. C) Be the same as a neutral atom. D) have more electrons.