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When struck with a sharp blow ionic compounds tend to what while metallic substances which are what change shape?
"When struck with a sharp blow, ionic compounds tend to (crack) while metallic substances, which are (covalently bonded), change shape."This makes the most sense. A lot of ionic compounds form salts which are crystalline and brittle in solid form. This is obviously homework but what a terrible question, right down to the punctuation.
Are all substances the same before and after burning?
No, some substances change their whole form and others just change their color and shape.
Is three properties of metals that are caused by metallic bonding?
they are shiny, ductile and malleable, which means that they can change shape.
What evidences a physical change?
"A physical change occurs when some of the properties of a material change, but the substances in the material remain the same." "...any actions that change the size and shape of a material, but not its composition." if the shape/form is changed but not its makeup, then that change is physical
Do enzymes change shape to move substances across the plasma membrane?
Enzymes and the substrates they work on fit like a lock and key, if you change the shape of the key, the lock won't open. An enzyme whose shape changes is no longer able to activate the reaction of the substrate.
Is making nugget a physical or chemical change?
As long as you are not adding or subtracting substances, the shape you put the metal in is purely a physical change.
Which one is not a sign of a chemical change change in shape bubbling smoking changing color?
Changing shape is not typically a sign of a chemical change. Chemical changes involve the rearrangement of atoms and molecules to form new substances with different properties. Shape change is more likely a physical change.
Is A change in form or shape of matter is a physical or Chemical Change?
Physical.
What would happen if a bell is placed in a vacuum?
Nothing will happen. It will continue to be a bell, its metallic composition will not change, nor will its shape, colour, etc.
How do transport move substances across membranes?
Transport proteins change shape, much like a folding door
What bond flattened and shape metals?
metallic bonds
What substances have indefinite shape and volume?
These are the gaseous substances.
