Does anyone know any good science fair projects for 8th grade? It will mean a lot if u do! Need one asap

Which element has the largest atomic radius? A. Be B. F C. Ba D. Ga

A canister of 2.00 moles of helium has a volume of 30.0 L and is at a temperature of 293 Kelvin. what is the pressure of this gas? 1. 19.5 kPa 2. 101.3 kPa 3. 162 kPa 4. 211 kPa

Can photosynthesis occur in the dark if plants are warm?

Summarize the Big Bang theory and name two sources of evidence that support it.

When we add 2.0 g of a solute to a solution, the mass of the solution always increases by 2.0 g. If we add 2.0 mL or 2.0 cm3 the volume does not increase by the same amount. Why not? Briefly explain.

A 4.5-liter sample of a gas has 0.80 mole of the gas. If 0.35 mole of the gas is added, what is the final volume of the gas? Temperature and pressure remain constant. 3.9 liters 5.3 liters 6.3 liters 6.5 liters

What is the unit used to measure the atomic mass?

Which metal in Period 5 is very reactive and has two valence electrons in each atom? rubidium (RD) strontium (SI) zirconium (Z1) silver (Ag)

Sara and Sam went for a two-hour drive. According to the graph, between. 75 hours and 1.25 hours into their trip, they A) slowed down to a speed of 15km/hour. B) travelled at a constant rate of 30km/hour.

Define the following terms: acids, bases, oxoacids, oxoanions, and hydrates.