Science Vocabulary-ACT Prep

"Boiling Point"

Which of the following is the best definition for this word?

• a liquid or a gas

• the temperature when a liquid becomes a gas

• rate of change in distance with respect to time

• heat transfer as a result of fluid movement

"Compound"

Which of the following is the best definition for this word?

• a substance made up of more than one element

• a liquid or gas

• the force that attracts an object towards the center of the earth

• a section of DNA that determines inheritance

"Element"

Which of the following is the best definition for this word?

• elements of an experiment that are controlled to remain the same

• a substance composed of atoms with the same atomic number which cannot be split into smaller substances

• substances that participate in a chemical reaction

• mass per volume of a substance

"Density"

Which of the following is the best definition for this word?

• quantity of heat energy

• substances that participate in a chemical reaction

• quantity of a body's matter

• mass per volume of a substance

"Buoyancy"

Which of the following is the best definition for this word?

• quantity of a body's matter

• measure of mass

• ability to float

• mass per volume of a substance

"Neutron"

Which of the following is the best definition for this word?

• smallest unit of a chemical component

• fundamental atom particle that has no charge

• fundamental atom particle that has a negative charge

• energy of an object due to its motion

"Herbivor"

Which of the following is the best definition for this word?

• an animal that eats only plants

• an animal that eats only other animals

• an animal that eats both plants and other animals

• a plant that "eats" bugs for additional nutrients

"Abiotic"

Which of the following is the best definition for this word?

• study of a cell

• study of living things

• with/ of life

• without life/ not living

"Calorie"

Which of the following is the best definition for this word?

• a quantity of heat energy

• quantity of energy per food molecule

• quantity of sugar per gram of food

• evil

"Molecule"

Which of the following is the best definition for this word?

• fundamental atom particle that has a positive charge

• second smallest unit of a chemical compound

• smallest unit of a chemical compound

• chemical compound that is always composed of several different atoms