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