Students will need a calculator and a periodic table!. EOG Review. Science 8 th grade. An atom is composed of protons, electrons, and neutrons. What is the electric charge on the proton?. 0 -1 +1 +2. The organelle that is responsible for making glucose is the ____. Mitochondria
Science 8th grade
A rock has a mass of 230 grams. It is placed into a graduated cylinder that originally has 50mL of water in it. The volume now reads 63mL. What is the object’s density?
If table salt (NaCl) is the product of the reaction between pure Sodium (Na) and Chlorine gas (Cl2), which balanced chemical formula represents this reaction?
A wooden block has a density of 2.4 g/cm respiration?3. If the block has a length of 2cm, a height of 1.1cm and a width of 4cm, what is the wooden block’s mass?
Hillary goes to the doctor for a routine check-up and is surprised to find out that she has the varicella virus in her blood. Because she has not exhibited any symptoms of this disease, Hillary is considered to be ____
Mary noticed that plants grew taller in her sunny front yard than in her shady backyard. She decides to perform an experiment that tests the amount of light and its effect on plant growth. Which of the following would be the best hypothesis for her experiment?
Hydrogen peroxide (H ____2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What is the balanced chemical equation for this reaction?
Hydrogen peroxide (H ____2O2), if left unopened, will eventually form water (H2O) and oxygen gas (O2). What type of chemical reaction is this?
A metal ball has a mass of 35g. To determine the volume, a graduated cylinder was filled up with 25 mL of water and the metal ball was placed inside. If the volume increased by 7mL, what is the object’s density?
A large number of people from the town Andersonville have developed thyroid problems. This town is known for its numerous steel factories. What might investigators conclude after some research?