A) any substance that has a definite composition B) an unnatural additive placed in food C) any substance that is not alive D) a toxic substance
A) the chemistry of living things B) non-carbon related compounds C) mathematical modeling D) the identification of the composition of materials
A) properties, changes, and relationships between energy and matter B) the chemistry of living things C) carbon-containing compounds D) crystals and minerals
A) long after the basis research is complete B) only to make money C) by accident D) in order go learn basic information
A) to develop new products B) to gain knowledge C) to understand an environmental problem D) to solve a particular problem.
A) in order to make money B) by accident C) to learn basic information D) to solve a particular problem
A) density B) amount of energy C) mass D) volume
A) being malleable and ductile B) taking up space and having mass C) being brittle and hard D) the ability to carry an electric current well and to hold electric charge
A) smaller than an electron B) the smallest unit of matter that maintains its chemical identity C) the smallest unit of a compound D) always made of carbon
A) volume B) mass C) weight D) density
A) light B) air C) smoke D) water vapor
A) as the force of Earth's gravity on an object increases, the object's mass increases B) mass is expressed in pounds C) mass if often measured with a spring scale D) mass is determined by comparing the mass of an object with a set of standard masses that are part of a balance
A) grinding B) cutting C) boiling D) burning
A) igniting B) burning C) rusting D) melting
A) synthetics B) reactants C) equilibria D) products |