Mid-Term Review 8th Grade Physical Science 5: Question Preview (ID: 23539)


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What is the difference between mass and volume?
a) Mass varies with amount of a substance, but volume does not. b) Volume varies with amount of substance but mass does not. c) Mass is amount of matter, volume is the space it takes up. d) Volume is weight, mass is how much space it takes up.
What is the difference between a chemical property and physical property?
a) Chemical Properties vary according to sample size, while Physical Properties never vary. b) Physical Properties can be identified without changing composition, while Chemical Properties can't. c) Chemical Properties are useful for identifying substances, but Physical Properties are not. d) Physical Properties are determined by a substance’s composition,while Chemical Properties aren't.
Which of the following is a physical change?
a) fireworks exploding b) wood burning c) banana rotting d) ice melting
An electron located in the outer shell of an atom is called a(n)
a) isotope b) neutron c) valence electron d) ion
How does a compound differ from a mixture?
a) A compound cannot be broken down into simpler substances. b) Compounds can be separated physically, mixtures can't. c) The composition of a mixture cannot vary, compounds can. d) A compound has a fixed ratio, while mixtures aren't fixed.
A positively charged particle found in the nucleus of an atom is known as a
a) neutron b) electron c) proton d) ion
How many sig figs in 300,000,000?
a) 1 b) 3 c) 8 d) 9
The atomic number of an atom is calculated by adding up its
a) electrons, neutrons and protons b) neutrons and protons c) electrons and neutrons d) protons only
If you are averaging 3.3, 4.75, and 2.002, what will the answer be with correct sig figs?
a) 3.4 b) 3.35 c) 3.351 d) 3.3507
How many sig figs in 0.00086?
a) 5 b) 2 c) 6 d) 1
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