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