is it happening to particular website or all

all, I'll have 5 tabs open and it crashes and then I reopen it and 1 tab is listed and start over.

Try with Firefox Beta

• https://play.google.com/store/apps/details?id=org.mozilla.firefox_beta

I already did that still crashes

Maybe the latest version of Firefox isn't supported on your Phone.

it's my tablet and I don't see why it wouldn't work there

Please ignore Jakob.

If you type about:crashes into your URL bar and press Enter do you have any crash ID's? If so please paste them here.

no crash reports

Based on your UA it looks as if you have a Samsung GT-P5210 Galaxy Tab 3.

One can rule out the Flash plugin at least for any crashes since the Flash plugin will not work on Intel Atom.