(lc)which of the following sewing implements is a good replacement for time-consuming hook-and-eye closures for a theatrical costume? buttons velcro laces elastic

Buttons

Explanation:

The button is a small object, usually round, used in garments to close it, locking it in a "house".

The advantage of using the button instead of hook-and-eye in theatrical costumes is that the button adjusts the clothes to the body faster than the hook-and-eye, fixing the clothes in a certain position more securely.

We can observe physical properties of elements and compounds without changing the substance.

Examples of physical properties: Density, color, boiling point, state of matter, appearance: dull or shiny, etc. 

But we can also observe and measure chemical properties by reacting a substance with something else. For example, like mixing baking soda and vinegar together. The vinegar reacts with the baking soda and produces carbon dioxide: a new substance. 

Some examples of chemical properties: Flammability, amount of heat that is released during combustion, toxicity (how much damage it causes to other organisms), radioactivity, and ability to oxidize (when you have metal that becomes rusty looking).