8th Grade Science: Question Preview (ID: 31024)


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John is making a pizza. Which process involves a chemical reaction?
a) mixing spices for the sauce b) baking the dough to form the crust c) slicing pepperoni for topping d) spreading cheese on the pizza
What state of matter has particles that are far apart and move fast?
a) solid b) liquid c) gas d)
What basic units of matter that has the same properties as an element called?
a) electrons b) neutrons c) atom d) protons
What is an example of a mixture?
a) Water b) Air c) Oxygen d) Table salt
2 or more substances combine together and keep thier individual properties is called a
a) atom b) compound c) element d) mixture
Which of these must occur when a substance goes through a chemical change?
a) The substance changes shape. b) The substance changes phases c) The substance forms a new substance d) The substance gets larger.
What state of matter has no definite shape, but a definite volume?
a) Solid b) Liquid c) Gas d)
2 or more elements that have been chemically combined is called a
a) element b) mixture c) atom d) compound
What element shares similar chemical properties to that of Calcium?
a) Potassium b) Barium c) Hydrogen d) Carbon
What state of matter has particles that have no definite shape or volume?
a) Solid b) Liquid c) Gas d) Water
Which one is a compound?
a) Carbon b) Water c) Oxygen d) Hydrogen
What do you use a triple beam balance to measure?
a) mass b) weight c) length d) volume
Fruit Salad is an example of
a) compound b) homgeneous mixture c) heterogenous mixture d) solution
If a substance tastes bitter and is slippery, it is probably:
a) Neutral b) Base c) Acid d) Compound
What state of matter moves the slowest
a) plasma b) gas c) liquid d) solid
Which one is a compound?
a) He b) H c) HCl d) Ca
What is the density of a 10 gram object with the volume 2 ml? (D=M/V)
a) 12 b) 10 c) 20 d) 5
The most abundant element in the Earth's atmosphere is:
a) Oxygen b) Hydrogen c) Carbon Dioxide d) Nitrogen
What is an example of a chemical change?
a) Breaking glass b) Ice cube c) Rusting nail d) Cutting paper
Which one is an element?
a) HCl b) He c) NaCl d) NaOH
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