Self-check quiz-eng. an example of a physical property is need a hint? a) flammability b) ability to rust c) acidic d) color when you observe a physical property, the substance need a hint? a) changes b) does not change c) burns d) melts what is not a physical property of paper? need a hint? a) it's white. b) it burns. c) it's smooth. color and shape describe the of matter. need a hint? a) chemical properties b) chemistry c) appearance d) feel mass and volume depend on the of matter present. need a hint? a) flammability b) chemical properties c) amount d) physical properties do (does) not change based on how much matter is present. need a hint? a) mass b) volume c) melting point and boiling point d) weight what does density measure? need a hint? a) volume per unit mass b) mass per unit volume c) weight per unit matter d) matter per unit weight magnetism is an example of a property of need a hint? a) behavior b) chemistry c) flammability d) mass when you observe a chemical property, the substance need a hint? a) remains the same b) melts c) burns d) changes an example of a chemical property is need a hint? a) ability to burn b) color c) mass d) density when sandpaper smooths a piece of wood, this is an example of a need a hint? a) chemical change b) physical change c) change of state d) change of matter

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Quickly! brainliest if two people answer! 1. the blood has red blood cells, white blood cells and platelets. red blood cells carry oxygen to other cells in the body. cells need oxygen to live. white blood cells destroy certain germs. they protect our bodies from disease. which question is answered in this paragraph? (a) what is the role of blood vessels? (b) what type of cells are attached to bones? (c) what type of blood cell to clot your blood? (d) what are the different types of blood cells? 2. which sentence from the section "stem cells" best explains the role of stem cells? (a) when one kind of cell stops working, stem cells can . (b) they can turn into that cell and take its place. (c) scientists are studying new ways to use stem cells. (d) these cells can people heal faster. 3. read the selection from the section "nerve cells." nerve cells send messages to the rest of our bodies. these messages move between the brain, spinal cord and various organs. nerve cells are also called neurons. fill in the blank. a "neuron" is a (a) cell that moves information from the brain to other parts of the body (b) stem cell that has both an axon and a dendrite (c) cell that controls the fingers of a body (d) cell that makes up the spinal cord 4. some muscles in our body move without us telling them to. these are called involuntary muscles. some examples are the cardiac muscle cells inside the heart. these cells the heart relax and fill with blood. what is the best definition of "involuntary" based on the context clues? (a) something that happens on its own (b) trying hard to do something (c) something moving back and forth (d) easily moved